malloc error in RubyMotion "hello world"

RubymotionTapMallocError

(in /Users/dodikk/projects/ruby/RubyMotionTestApp-master)
     Build ./build/iPhoneSimulator-6.0-Development
   Compile ./spec/fail_test.rb
      Link ./build/iPhoneSimulator-6.0-Development/HelloMotion_spec.app/HelloMotion
    Create ./build/iPhoneSimulator-6.0-Development/HelloMotion_spec.dSYM
  Simulate ./build/iPhoneSimulator-6.0-Development/HelloMotion_spec.app
2013-01-08 23:44:15.201 HelloMotion[2228:11303] Application windows are expected to have a root view controller at the end of application launch
HelloMotion(2228,0xacd202c0) malloc: *** error for object 0x8a9a560: pointer being freed was not allocated
*** set a breakpoint in malloc_error_break to debug
dodikk-macbook:spec dodikk$ cat result.txt 
not ok 2 - always fails: FAILED
# Bacon::Error: 1.==(2) failed
#      spec.rb:638:in `satisfy:': Fail test - always fails
# 	spec.rb:652:in `method_missing:'
# 	 5:in `equal:'
# 	spec.rb:268:in `block in run_spec_block'
# 	spec.rb:392:in `execute_block'
# 	spec.rb:268:in `run_spec_block'
# 	spec.rb:283:in `run'
ok 2   - has one window
1..2
# 2 tests, 2 assertions, 1 failures, 0 errors