“Aptana Unified Builder” problem & solution

I ran into a problem today with RadRails 2 and its ‘Aptana Unified Builder.’ I was trying to launch my project and the IDE kept hanging on “Invoking ‘Aptana Unified Builder’ on ‘/project’”

After updating my RadRails2 with a nightly build and trying different versions of RadRails, Aptana and even RubyMine; this is my proposed solution.

1. Go to Preferences > Run/Debug > Launching.
2. Switch ‘Wait for ongoing build to complete before launching’ to ‘Never.’
3. Switch off ‘Build (if required) before launching’
4. Press OK

That solved my problem. Now back to work!