# RAD RAILS Problem. Wont start! Linux nubee

**URL:** <https://www.ruby-forum.com/t/rad-rails-problem-wont-start-linux-nubee/62220>\
**Category:** Rails\
**Created:** [June 1, 2006, 5:39pm UTC](https://www.ruby-forum.com/t/rad-rails-problem-wont-start-linux-nubee/62220 "2006-06-01T17:39:12Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![chris](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/958977/32.png) [@chris](https://www.ruby-forum.com/u/chris)\
**Post date:** [June 1, 2006, 5:39pm UTC](https://www.ruby-forum.com/t/rad-rails-problem-wont-start-linux-nubee/62220/1 "2006-06-01T17:39:12Z")

</div>

Hi  
I’ve just installed SUSE linux, downloaded RADRAILS, and extracted it to  
/home/myname/bin/radrails.

When i try to run it i get the red radrails logo and then it gives me an  
error and stops loading. Its my first day using Linux, previously i  
have used windows, so any help is greately appreciated. Here is the log  
file with the errors in it :

## chrisr@s213:~\> cat /home/chrisr/bin/radrails/configuration/1149175331973.log !SESSION 2006-06-01 16:22:11.639

eclipse.buildId=unknown  
java.version=1.4.2\_06  
java.vendor=Sun Microsystems Inc.  
BootLoader constants: OS=linux, ARCH=x86, WS=gtk, NL=en\_US  
Command-line arguments: -os linux -ws gtk -arch x86

!ENTRY org.eclipse.osgi 4 0 2006-06-01 16:22:13.647  
!MESSAGE An error occurred while automatically activating bundle  
org.radrails.ide.ui (13).  
!STACK 0  
org.osgi.framework.BundleException: The activator  
org.radrails.ide.ui.RadRailsIDEPlugin for bundle org.radrails.ide.ui is  
invalid  
at  
org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:141)  
at  
org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:965)  
at  
org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:317)  
at  
org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:256)  
at  
org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.preFindLocalClass(EclipseLazyStarter.java:86)  
at  
org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:402)  
at  
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:188)  
at  
org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(BundleLoader.java:338)  
at  
org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:390)  
at  
org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:351)  
at  
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:83)  
at java.lang.ClassLoader.loadClass(ClassLoader.java:235)  
at  
org.eclipse.osgi.framework.internal.core.BundleLoader.loadClass(BundleLoader.java:276)  
at  
org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:227)  
at  
org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1245)  
at  
org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:144)  
at  
org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:759)  
at  
org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)  
at  
org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:51)  
at  
org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:74)  
at  
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:92)  
at  
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:68)  
at  
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:376)  
at  
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:169)  
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  
at  
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)  
at  
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)  
at java.lang.reflect.Method.invoke(Method.java:324)  
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336)  
at org.eclipse.core.launcher.Main.basicRun(Main.java:280)  
at org.eclipse.core.launcher.Main.run(Main.java:977)  
at org.eclipse.core.launcher.Main.main(Main.java:952)  
Caused by: java.lang.UnsupportedClassVersionError:  
org/radrails/ide/ui/RadRailsIDEPlugin (Unsupported major.minor version  
49.0)  
at java.lang.ClassLoader.defineClass0(Native Method)  
at java.lang.ClassLoader.defineClass(ClassLoader.java:539)  
at  
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.defineClass(DefaultClassLoader.java:160)  
at  
org.eclipse.osgi.baseadaptor.loader.ClasspathManager.defineClass(ClasspathManager.java:491)  
at  
org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findClassImpl(ClasspathManager.java:461)  
at  
org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClassImpl(ClasspathManager.java:420)  
at  
org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:403)  
at  
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:188)  
at  
org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(BundleLoader.java:338)  
at  
org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:390)  
at  
org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:351)  
at  
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:83)  
at java.lang.ClassLoader.loadClass(ClassLoader.java:235)  
at  
org.eclipse.osgi.framework.internal.core.BundleLoader.loadClass(BundleLoader.java:276)  
at  
org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:227)  
at  
org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:134)  
… 31 more  
Root exception:  
java.lang.UnsupportedClassVersionError:  
org/radrails/ide/ui/RadRailsIDEPlugin (Unsupported major.minor version  
49.0)  
at java.lang.ClassLoader.defineClass0(Native Method)  
at java.lang.ClassLoader.defineClass(ClassLoader.java:539)  
at  
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.defineClass(DefaultClassLoader.java:160)  
at  
org.eclipse.osgi.baseadaptor.loader.ClasspathManager.defineClass(ClasspathManager.java:491)  
at  
org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findClassImpl(ClasspathManager.java:461)  
at  
org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClassImpl(ClasspathManager.java:420)  
at  
org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:403)  
at  
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:188)  
at  
org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(BundleLoader.java:338)  
at  
org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:390)  
at  
org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:351)  
at  
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:83)  
at java.lang.ClassLoader.loadClass(ClassLoader.java:235)  
at  
org.eclipse.osgi.framework.internal.core.BundleLoader.loadClass(BundleLoader.java:276)  
at  
org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:227)  
at  
org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:134)  
at  
org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:965)  
at  
org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:317)  
at  
org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:256)  
at  
org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.preFindLocalClass(EclipseLazyStarter.java:86)  
at  
org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:402)  
at  
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:188)  
at  
org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(BundleLoader.java:338)  
at  
org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:390)  
at  
org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:351)  
at  
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:83)  
at java.lang.ClassLoader.loadClass(ClassLoader.java:235)  
at  
org.eclipse.osgi.framework.internal.core.BundleLoader.loadClass(BundleLoader.java:276)  
at  
org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:227)  
at  
org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1245)  
at  
org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:144)  
at  
org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:759)  
at  
org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)  
at  
org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:51)  
at  
org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:74)  
at  
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:92)  
at  
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:68)  
at  
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:376)  
at  
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:169)  
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  
at  
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)  
at  
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)  
at java.lang.reflect.Method.invoke(Method.java:324)  
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336)  
at org.eclipse.core.launcher.Main.basicRun(Main.java:280)  
at org.eclipse.core.launcher.Main.run(Main.java:977)  
at org.eclipse.core.launcher.Main.main(Main.java:952)

!ENTRY org.eclipse.osgi 4 0 2006-06-01 16:22:13.685  
!MESSAGE Application error  
!STACK 1  
org.eclipse.core.runtime.CoreException: Plug-in org.radrails.ide.ui was  
unable to load class org.radrails.ide.ui.RadRails.  
at  
org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.throwException(RegistryStrategyOSGI.java:162)  
at  
org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:146)  
at  
org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:759)  
at  
org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)  
at  
org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:51)  
at  
org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:74)  
at  
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:92)  
at  
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:68)  
at  
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:376)  
at  
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:169)  
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  
at  
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)  
at  
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)  
at java.lang.reflect.Method.invoke(Method.java:324)  
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336)  
at org.eclipse.core.launcher.Main.basicRun(Main.java:280)  
at org.eclipse.core.launcher.Main.run(Main.java:977)  
at org.eclipse.core.launcher.Main.main(Main.java:952)  
org.eclipse.core.runtime.CoreException[1]:  
java.lang.ClassNotFoundException: org.radrails.ide.ui.RadRails  
at  
org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:406)  
at  
org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:351)  
at  
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:83)  
at java.lang.ClassLoader.loadClass(ClassLoader.java:235)  
at  
org.eclipse.osgi.framework.internal.core.BundleLoader.loadClass(BundleLoader.java:276)  
at  
org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:227)  
at  
org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1245)  
at  
org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:144)  
at  
org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:759)  
at  
org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)  
at  
org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:51)  
at  
org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:74)  
at  
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:92)  
at  
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:68)  
at  
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:376)  
at  
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:169)  
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  
at  
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)  
at  
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)  
at java.lang.reflect.Method.invoke(Method.java:324)  
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336)  
at org.eclipse.core.launcher.Main.basicRun(Main.java:280)  
at org.eclipse.core.launcher.Main.run(Main.java:977)  
at org.eclipse.core.launcher.Main.main(Main.java:952)

!ENTRY org.eclipse.osgi 2 0 2006-06-01 16:22:13.740  
!MESSAGE One or more bundles are not resolved because the following root  
constraints are not resolved:  
!SUBENTRY 1 org.eclipse.osgi 2 0 2006-06-01 16:22:13.740  
!MESSAGE Bundle update@plugins/org.eclipse.platform\_3.2.0.v20060329/ was  
not resolved.  
!SUBENTRY 2 org.eclipse.platform 2 0 2006-06-01 16:22:13.740  
!MESSAGE Missing required bundle  
org.eclipse.ui.intro.universal\_[3.2.0,4.0.0).

!ENTRY org.eclipse.osgi 2 0 2006-06-01 16:22:13.742  
!MESSAGE The following is a complete list of bundles which are not  
resolved, see the prior log entry for the root cause if it exists:  
!SUBENTRY 1 org.eclipse.osgi 2 0 2006-06-01 16:22:13.742  
!MESSAGE Bundle update@plugins/org.eclipse.platform\_3.2.0.v20060329/  
[84] was not resolved.  
!SUBENTRY 2 org.eclipse.platform 2 0 2006-06-01 16:22:13.742  
!MESSAGE Missing required bundle  
org.eclipse.ui.intro.universal\_[3.2.0,4.0.0).

---

<div class="post-metadata">

**Author:** ![chris](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/958977/32.png) [@chris](https://www.ruby-forum.com/u/chris)\
**Post date:** [June 2, 2006, 10:40am UTC](https://www.ruby-forum.com/t/rad-rails-problem-wont-start-linux-nubee/62220/2 "2006-06-02T10:40:09Z")

</div>

Surely one of you hardcore linux peeps can solve this easy problem?  
If this were a windows problem i’m sure i’d have a quick answer to it.  
Its a big pity. I’d really like to use Linux, but there are so many  
obstacles.

---

<div class="post-metadata">

**Author:** ![chris](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/958977/32.png) [@chris](https://www.ruby-forum.com/u/chris)\
**Post date:** [June 2, 2006, 5:26am UTC](https://www.ruby-forum.com/t/rad-rails-problem-wont-start-linux-nubee/62220/3 "2006-06-02T05:26:40Z")

</div>

your best bet is to install Eclipse through your distributions  
packageing system (eg apt-get/yum/pacman/emerge) and then install the  
radrails module from inside eclipse’s extension/upgrade manager  
thingamo… the url you need to add to the list is on the frontpage of  
the radrails site

and check out rails.el fmr emacs…

---

<div class="post-metadata">

**Author:** ![chris](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/958977/32.png) [@chris](https://www.ruby-forum.com/u/chris)\
**Post date:** [June 2, 2006, 6:49pm UTC](https://www.ruby-forum.com/t/rad-rails-problem-wont-start-linux-nubee/62220/4 "2006-06-02T18:49:43Z")

</div>

I know this won’t help you solve your problem, but I just wanted to let  
you  
know that I installed Suse 10.1 and had no problem running RadRails just  
by  
downloading and unpacking it. I followed the same basic steps you  
described. Perhaps you are missing some sort of dependency?

Hope you get it working. Development has been much smoother working  
under  
Linux than Windows.

---

<div class="post-metadata">

**Author:** ![chris](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/958977/32.png) [@chris](https://www.ruby-forum.com/u/chris)\
**Post date:** [June 2, 2006, 6:40pm UTC](https://www.ruby-forum.com/t/rad-rails-problem-wont-start-linux-nubee/62220/5 "2006-06-02T18:40:54Z")

</div>

My radrails won’t start either on Ubuntu Dapper, but using EasyEclipse  
([http://www.easyeclipse.org](http://www.easyeclipse.org)) instead worked a treat.

They have prepackaged Eclipse distributions for various purposes that  
you can just unzip and run right away. Pick the ruby/rails distribution,  
then once it’s running all you need to get into Radrails is choose the  
‘rails’ perspective from the menu.

---

<div class="post-metadata">

**Author:** ![chris](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/958977/32.png) [@chris](https://www.ruby-forum.com/u/chris)\
**Post date:** [June 3, 2006, 2:51am UTC](https://www.ruby-forum.com/t/rad-rails-problem-wont-start-linux-nubee/62220/6 "2006-06-03T02:51:09Z")

</div>

I was having problems with RadRails0.6.3 on FedoraCore5. Followed the  
steps  
here without success. I’m now using Easy-Ecilpse. Development it much  
smoother on Linux now. Though I still deploy on a Windows box, at least  
for  
now.  
Best of Luck  
-Larry