# Annoyance with gems and zlib **URL:** \ **Category:** Ruby\ **Created:** [April 3, 2009, 5:29pm UTC](https://www.ruby-forum.com/t/annoyance-with-gems-and-zlib/164652 "2009-04-03T17:29:00Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![spobo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/f4b2a3/32.png) [@spobo](https://www.ruby-forum.com/u/spobo)\ **Post date:** [April 3, 2009, 5:29pm UTC](https://www.ruby-forum.com/t/annoyance-with-gems-and-zlib/164652/1 "2009-04-03T17:29:00Z")
Hi … i’ve been trying to get rails up and running on my system. I run OS X leopard. updated ruby to 1.8.7. Installed ruby 1.9 with a suffix following this guide ([http://ruby.tie-rack.org/28/installing-19/](http://ruby.tie-rack.org/28/installing-19/)) So I checked what rails version I had … turns out to be 1.2.6 _iiiiik_ Quickly typed the following: mbp:~ spobo$ gem update rails -v And got this awesome result. Updating installed gems GET 302 Found: [RubyGems.org | your community gem host](http://gems.rubyforge.org/latest_specs.4.8.gz) GET 200 OK: [http://guide.opendns.com/?url=gems.rubyforge.org%2Flatest\_specs.4.8.gz&servfail](http://guide.opendns.com/?url=gems.rubyforge.org%2Flatest_specs.4.8.gz&servfail) ERROR: While executing gem … (Zlib::GzipFile::Error) not in gzip format mbp:~ spobo$ so … anyone have any clues? I’m sort of really stumped as to what goes where when you compile programs like ruby as to what goes where and how do you tweak/uninstall it when necessary. ps: mbp:~ spobo$ sudo gem update --system Updating RubyGems ERROR: While executing gem … (Zlib::GzipFile::Error) not in gzip format ps2: yes, I know I’m not using ruby 1.9 when I do the simple gem command and no, gem19 install rails and gem19 update --system do the same. ---
**Author:** ![spobo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/f4b2a3/32.png) [@spobo](https://www.ruby-forum.com/u/spobo)\ **Post date:** [April 3, 2009, 5:40pm UTC](https://www.ruby-forum.com/t/annoyance-with-gems-and-zlib/164652/2 "2009-04-03T17:40:09Z")
On Apr 3, 2009, at 9:28 AM, Vincent Ds wrote: > nd got this awesome result. > > Updating installed gems > GET 302 Found: [RubyGems.org | your community gem host](http://gems.rubyforge.org/latest_specs.4.8.gz) > GET 200 OK: > [http://guide.opendns.com/?url=gems.rubyforge.org%2Flatest\_specs.4.8.gz&servfail](http://guide.opendns.com/?url=gems.rubyforge.org%2Flatest_specs.4.8.gz&servfail) did you even try clicking the above link? you are having dns issues. either that, or [gems.rubyforge.org](http://gems.rubyforge.org) was down when you ran that command. first step is always to read the error messages! 😉 regards. > ERROR: While executing gem … (Zlib::GzipFile::Error) > not in gzip format > mbp:~ spobo$ a @ [http://codeforpeople.com/](http://codeforpeople.com/) ---
**Author:** ![spobo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/f4b2a3/32.png) [@spobo](https://www.ruby-forum.com/u/spobo)\ **Post date:** [April 3, 2009, 5:52pm UTC](https://www.ruby-forum.com/t/annoyance-with-gems-and-zlib/164652/3 "2009-04-03T17:52:09Z")
Ara Howard wrote: > On Apr 3, 2009, at 9:28 AM, Vincent Ds wrote: > > > nd got this awesome result. > > > > Updating installed gems > > GET 302 Found: [RubyGems.org | your community gem host](http://gems.rubyforge.org/latest_specs.4.8.gz) > > GET 200 OK: > > [http://guide.opendns.com/?url=gems.rubyforge.org%2Flatest\_specs.4.8.gz&servfail](http://guide.opendns.com/?url=gems.rubyforge.org%2Flatest_specs.4.8.gz&servfail) > > did you even try clicking the above link? Well … to tell the truth I only got that reply once. The 90 other times everything just said not in gzip format without anything else. I was hoping it was more of a quick fix and a known issue. I’ll try turning off opendns and see what happens then. > you are having dns issues. either that, or [gems.rubyforge.org](http://gems.rubyforge.org) was > down when you ran that command. first step is always to read the > error messages! 😉 > > regards. > > > ERROR: While executing gem … (Zlib::GzipFile::Error) > > not in gzip format > > mbp:~ spobo$ > > a @ [http://codeforpeople.com/](http://codeforpeople.com/) ---
**Author:** ![spobo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/f4b2a3/32.png) [@spobo](https://www.ruby-forum.com/u/spobo)\ **Post date:** [April 3, 2009, 10:37pm UTC](https://www.ruby-forum.com/t/annoyance-with-gems-and-zlib/164652/4 "2009-04-03T22:37:11Z")
On Apr 3, 2009, at 08:52, Vincent Ds wrote: > > did you even try clicking the above link? > > Well … to tell the truth I only got that reply once. The 90 other > times everything just said not in gzip format without anything else. I > was hoping it was more of a quick fix and a known issue. I’ll try > turning off opendns and see what happens then. Did you try fetching either URL (using wget or curl or telnet)? It seems that opendns breaks the internet on purpose. I would avoid it at all cost. ---
**Author:** ![spobo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/f4b2a3/32.png) [@spobo](https://www.ruby-forum.com/u/spobo)\ **Post date:** [April 3, 2009, 10:53pm UTC](https://www.ruby-forum.com/t/annoyance-with-gems-and-zlib/164652/5 "2009-04-03T22:53:58Z")
Eric H. wrote: > On Apr 3, 2009, at 08:52, Vincent Ds wrote: > > > > did you even try clicking the above link? > > > > Well … to tell the truth I only got that reply once. The 90 other > > times everything just said not in gzip format without anything else. I > > was hoping it was more of a quick fix and a known issue. I’ll try > > turning off opendns and see what happens then. > > Did you try fetching either URL (using wget or curl or telnet)? > > It seems that opendns breaks the internet on purpose. I would avoid > it at all cost. I completely agree. Turned off opendns and everything started working magically. Who knew … perhaps the guys running opendns are Java fanboys? Also, rails was using a different version of ruby which led to some incompatibilities between rubygems and rails. Everything is fixed now and running smoothly with phusion passenger … brilliant 😛 Off to do some conding! ---
**Author:** ![spobo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/f4b2a3/32.png) [@spobo](https://www.ruby-forum.com/u/spobo)\ **Post date:** [April 4, 2009, 1:19am UTC](https://www.ruby-forum.com/t/annoyance-with-gems-and-zlib/164652/6 "2009-04-04T01:19:22Z")
On Friday 03 April 2009 15:53:27 Vincent Ds wrote: > Eric H. wrote: > > > It seems that opendns breaks the internet on purpose. I would avoid > > it at all cost. > > I completely agree. Turned off opendns and everything started working > magically. Who knew … perhaps the guys running opendns are Java > fanboys? Nah, they just hate the Internet. Maybe they’re Flash fanbois? However, it is possible to register an IP address to not use this “feature”: \<[http://www.labnol.org/internet/stop-opendns-from-redirecting-domain-](http://www.labnol.org/internet/stop-opendns-from-redirecting-domain-) typos/4112/\> Not great, but it works, if your ISP-provided DNS is really bad enough that you need OpenDNS. If not, easier to just turn it off.