java.lang.RuntimeException: Unable to execute interpreter: [

Hello,
New to Ruby, just installed InstantRails and RadRails. Upon creating a
project I get the messages below

In the Console
invalid option – e

In the Ri tab
For help on options, try ‘rdoc --help’

java.lang.RuntimeException: Unable to execute interpreter:
[C:/InstantRails/ruby/bin/ri, --no-pager, -l]null
at
org.rubypeople.rdt.internal.ui.infoviews.RIView$RubyInvoker.invoke(Unknown
Source)
at
org.rubypeople.rdt.internal.ui.infoviews.RIView.initSearchList(Unknown
Source)
at org.rubypeople.rdt.internal.ui.infoviews.RIView.updatePage(Unknown
Source)
at
org.rubypeople.rdt.internal.ui.infoviews.RIView.createPartControl(Unknown
Source)
at
org.eclipse.ui.internal.ViewReference.createPartHelper(ViewReference.java:332)
at
org.eclipse.ui.internal.ViewReference.createPart(ViewReference.java:197)
at
org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:566)

rce)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
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)