Comments on: Zlib:BufError while installing Capistrano on Windows

By: Ranu Mandan

Ranu Mandan — Fri, 07 Aug 2009 14:05:39 +0000

first of all,. check your ruby bin folder for zlib.dll
in mine case there was zlib1.dll , so instead of renaming the zlib1.dll , i copied it with different name zlib.dll
and that solved the issue.

By: Tiago Adami

Tiago Adami — Fri, 14 Dec 2007 17:36:52 +0000

This works also when installing Rails from RubyGems:

gem update –system
gem update –system
gem install rails –include-dependencies

Thx again, Alex.

By: george

george — Tue, 11 Dec 2007 16:36:53 +0000

Thanks mate for your tip!!

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Instalando RMagick no windows by Blog do kraudio — Thu, 01 Nov 2007 05:15:07 +0000

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By: Instalando RMagick no windows « Blog do kraudio

Instalando RMagick no windows « Blog do kraudio — Tue, 25 Sep 2007 02:08:15 +0000

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By: Steve Midgley

Steve Midgley — Fri, 07 Sep 2007 17:43:21 +0000

This turns out to be a very general problem with Zlib on Ruby for Windows. I’ve written up the code that allows you to work around it:

http://www.misuse.org/science/2007/09/07/ruby-zlib-buffer-error-on-windows/

Basically the core is from the RubyGems guys (Jamis Buck I think). I’ve just published the code if anyone needs to know how to avoid buffer errors in the Zlib Ruby library in other places on Windows.

By: srboisvert

srboisvert — Wed, 08 Aug 2007 17:23:29 +0000

Thanks Alex. That did the job. Now on to the hard work! Up, up and away!

By: Alex Gorbatchev

Alex Gorbatchev — Wed, 08 Aug 2007 16:14:14 +0000

Seems like the error is referring to highline gem. See if you have it and maybe install/update.

http://rubyforge.org/projects/highline/

By: srboisvert

srboisvert — Wed, 08 Aug 2007 16:09:27 +0000

I am getting a bit different error.

I have instant rails installed and it works fine.

I’ve installed the Capistrano gem and it indicates success but as soon as I test it with cap -h. it throws up an error:

C:/InstantRails/ruby/lib/ruby/gems/1.8/gems/capistrano-2.0.0/lib/capistrano
ui.rb:5: undefined method `track_eof=’ for HighLine:Class (NoMethodError)

I’ve updated several times – each time it says:
Updating RubyGems…
Need to update 1 gems from http://gems.rubyforge.org
.
complete
Attempting remote update of rubygems-update
Successfully installed rubygems-update-0.9.4
Updating version of RubyGems to 0.9.4
Installing RubyGems 0.9.4

and indicates everything went fine.

I’m a bit frustrated since nobody else seems to have this error.

By: Jan M

Jan M — Sat, 16 Jun 2007 21:12:17 +0000

Ok, after two times “gem update –system” I still had the same error. It also suddenly wanted to update gems that were already up to date. So I did a reinstall of Ruby, then the two updates and then it worked.

I tracked down the cause of the screwed up installation and it turned out to be the preview version of capistrano 2! Be warned. Before I figured this out I had done 5 clean Ruby installs…

So, although the tutorial on their site tell you, DON’T DO:
gem install -s http://gems.rubyonrails.com capistrano