Ruby Enterprise Edition users may see a `Zlib::GzipFile::Error` while installing gems. It is due to [a bug in REE](http://code.google.com/p/rubyenterpriseedition/issues/detail?id=45). You may be able to resolve the issue by upgrading REE, or changing to a different interpreter.
### Rake activation error
Anyone who has installed the Spork gem may see activation errors while running `rake` directly. This is because old versions of Spork would [install the newest rake using a mkmf file](https://github.com/timcharper/spork/issues/119). To resolve the issue, update the Spork version requirement in your Gemfile to at least `"~>0.8.5"` or `"~>0.9.0.rc8"`.
## Troubleshooting
Instructions for common Bundler use-cases can be found on the [Bundler documentation site](http://gembundler.com/v1.0/).
Detailed information about each Bundler command, including help with common problems, can be found in the [Bundler man pages](http://gembundler.com/man/bundle.1.html).
After reading the documentation, try these troubleshooting steps:
Instructions that allow the Bundler team to reproduce your issue are vitally important. When you report a bug, please include the following information:
- The command you ran
- Exception backtrace(s), if any
- Your Gemfile
- Your Gemfile.lock
- Your Bundler configuration settings (run `bundle config`)
- What version of bundler you are using (run `bundle -v`)
- What version of Ruby you are using (run `ruby -v`)
- What version of Rubygems you are using (run `gem -v`)
- Whether you are using RVM, and if so what version (run `rvm -v`)
- Whether you have the `rubygems-bundler` gem, which can break gem binares
[Create a gist](https://gist.github.com) containing all of that information, then visit the [Bundler issue tracker](https://github.com/carlhuda/bundler) and create a new ticket describing your problem and linking to your gist.