RubyMine 6.0.2 Uncaught exception: failed to allocate memory

On Ubuntu 13.04 and RubyMine 6.0.2, I am having major trouble debugging.

After a custom exception is raise (and I have an exception break set for it), I am left at the place the exception was raised in the debugger.

When I try to traverse the stack frames, it takes a few minutes trying to load the stack frame, and then I get:

Uncaught exception: failed to allocate memory

I am trying to debug a non-Rails application, and I've altered rubymine64.vmoptions because I kept running out of memory before. It is not clear to me that the above error is Java-related or Ruby-related.

I am hoping that this issue can be resolved, because the entire reason I purchased a RubyMine license is to ease my debugging with your tool. I do not wish to have to resort to debugging this complex application from command-line (like I sometimes do).

It is my hopes that RubyMine is up to the task. Please tell me what I am doing wrong here.

My system: i7, 24GB RAM, running 64-bit Ubuntu 13.10, and RubyMine running with the lastest Oracle Java installed:

java version "1.7.0_45"
Java(TM) SE Runtime Environment (build 1.7.0_45-b18)
Java HotSpot(TM) 64-Bit Server VM (build 24.45-b08, mixed mode)

Stack frame dump:

 /home/trader/.gem/ruby/2.0.0/gems/ruby-debug-ide-0.4.22/lib/ruby-debug-ide/commands/variables.rb:127:in `inspect'
 /home/trader/.gem/ruby/2.0.0/gems/ruby-debug-ide-0.4.22/lib/ruby-debug-ide/commands/variables.rb:127:in `execute'
 /home/trader/.gem/ruby/2.0.0/gems/ruby-debug-ide-0.4.22/lib/ruby-debug-ide/ide_processor.rb:41:in `block (2 levels) in process_commands'
 /home/trader/.gem/ruby/2.0.0/gems/ruby-debug-ide-0.4.22/lib/ruby-debug-ide/ide_processor.rb:34:in `each'
 /home/trader/.gem/ruby/2.0.0/gems/ruby-debug-ide-0.4.22/lib/ruby-debug-ide/ide_processor.rb:34:in `block in process_commands'
 /home/trader/.gem/ruby/2.0.0/gems/ruby-debug-ide-0.4.22/lib/ruby-debug-ide/ide_processor.rb:33:in `catch'
 /home/trader/.gem/ruby/2.0.0/gems/ruby-debug-ide-0.4.22/lib/ruby-debug-ide/ide_processor.rb:33:in `process_commands'
 /home/trader/.gem/ruby/2.0.0/gems/ruby-debug-ide-0.4.22/lib/ruby-debug-ide/event_processor.rb:58:in `line_event'
 /home/trader/.gem/ruby/2.0.0/gems/ruby-debug-ide-0.4.22/lib/ruby-debug-ide/event_processor.rb:34:in `at_line'
 /usr/local/rvm/rubies/ruby-2.0.0-p353/lib/ruby/gems/2.0.0/gems/debase-0.0.9/lib/debase/context.rb:37:in `at_line'
 /home/trader/dev/ruby_projects/rubyneat/lib/rubyneat/critter.rb:130:in `block in wire!'
 /home/trader/dev/ruby_projects/rubyneat/lib/rubyneat/critter.rb:128:in `each'
 /home/trader/dev/ruby_projects/rubyneat/lib/rubyneat/critter.rb:128:in `wire!'