Debugger working intermittently

I often get the following error when trying to debug my project ( RubyMine 3.2.x )

/Users/colinmcgowan/.rvm/rubies/ruby-1.8.7-p302/bin/ruby -e at_exit{sleep(1)};$stdout.sync=true;$stderr.sync=true;load($0=ARGV.shift) /Users/colinmcgowan/.rvm/gems/ruby-1.8.7-p302@pml-portal/gems/ruby-debug-ide-0.4.17.beta5/bin/rdebug-ide --port 64352 -- /Users/colinmcgowan/.rvm/gems/ruby-1.8.7-p302@pml-portal/bin/rake db:migrate
Fast Debugger (ruby-debug-ide 0.4.17.beta5, ruby-debug-base 0.10.5.jb2) listens on 127.0.0.1:64352
(in /Users/colinmcgowan/Desktop/Scoobyclub/Customers/PositiveMomentum/portal/application/pml-portal)

Process finished with exit code 0

I was getting this repeatedly so I started up the Rails project normally. This worked fine.

I then went to try debug again and it worked.

Something strange is going on, should this be a bug report?

Regards
Colin McGowan