Mongrel fails to start after installation of plugin prawnto

After I installed prawnto in my project, Mongrel fails to start with
these backtrace lines:

/home/inet/Aptana RadRails
Workspace/wvz/vendor/rails/activesupport/lib/active_support/dependencies.rb:275:in
`load_missing_constant': uninitialized constant
ActiveSupport::Memoizable (NameError)
  from /home/inet/Aptana RadRails
Workspace/wvz/vendor/rails/activesupport/lib/active_support/dependencies.rb:467:in
`const_missing'
  from /home/inet/Aptana RadRails
Workspace/wvz/vendor/plugins/prawnto/lib/prawnto/template_handler/compile_support.rb:5

Any idea how to fix this?

After I installed prawnto in my project, Mongrel fails to start with
these backtrace lines:

Sounds like your app is using a version of rails that is too old

fred

Frederick Cheung wrote:

Frederick Cheung wrote:

> Sounds like your app is using a version of rails that is too old

That's what I guessed and for that completly uninstalled rails and gem
from my system and reinstalled gem1.8 + rails 2.3.5

But it did not change anything. Running 'script/server' -u' from my
project still invokes
/home/inet/.gem/ruby/1.8/gems/activesupport-2.1.0/... stuff, while 2.3.5
is also available there.

How to update the project? (Running rails:update didn't help.)

the version to use is set in environment.rb (unless you have frozen
rails into vendor)

fred

Frederick Cheung wrote:

the version to use is set in environment.rb (unless you have frozen
rails into vendor)

Thanks, now the debugger is starting up, but the bad news is, that I
still get the same message, than with the former version:

   uninitialized constant ActiveSupport::Memoizable (NameError)

How to get rid of this plugin?

Fritz Trapper wrote:

   uninitialized constant ActiveSupport::Memoizable (NameError)

This was nonsense, sorry. mysql was missing. After running

   apt-get install libmysqlclient15-dev
   gem install mysql

My app now runs again. Thanks for your help.