Could not connect to debugger on port xxxxx for rails debugging

I installed Aptana for eclipse on Windows 7. When I try to debug a RoR app, it throws the following error:

An internal error occurred during: "Launching myRailsApp". Could not connect to debugger on port 50671

The console shows this:

Debugger (ruby-debug-ide 0.4.16, ruby-debug-base 0.11) listens on 127.0.0.1:50308
Fatal exception in DebugThread loop: The requested service provider could not be loaded or initialized. - socket(2)
Backtrace:
C:/Ruby192/lib/ruby/gems/1.9.1/gems/ruby-debug-ide-0.4.16/lib/ruby-debug-ide.rb:135:in `initialize'
 from: C:/Ruby192/lib/ruby/gems/1.9.1/gems/ruby-debug-ide-0.4.16/lib/ruby-debug-ide.rb:135:in `new'
 from: C:/Ruby192/lib/ruby/gems/1.9.1/gems/ruby-debug-ide-0.4.16/lib/ruby-debug-ide.rb:135:in `block in start_control'

The server was started successfully at localhost:3000

I just want to get the d开发者_Go百科ebugger up and running so I can set breakpoints, etc.

What would be the cause of this error?

Do you already have something else, like another project, running on port 50671? This error is usually thrown when the port is already in use. Try killing Aptana and restarting.

Looks like your port is running on 50308, and your IDE trying to connect to 50671. Debugger (ruby-debug-ide 0.4.16, ruby-debug-base 0.11) listens on 127.0.0.1:50308

Do you have ruby-debug-ide gem installed ??