Is it possible to run Ruby-Tk from a Ruby interpreter embedded in C?

My use case is a Ruby app for the Mac App Store. Because Ruby does not 
have any usable deployment tools for desktop apps on the Mac, I was 
hoping to deploy a simple stub app with an embedded interpreter that 
would link against the system-installed Ruby 2.0 (this is on 10.9, 
Mavericks).

I've put together a simple test case, which crashes with a segmentation 
fault. I'm not clear why. Here is my C code:

#include <ruby/ruby.h>


int main()
{
   ruby_init();
  char* file = "/Users/kevin/Desktop/test.rb";
    ruby_script(file);
    ruby_init_loadpath();
   void *node = rb_load_file(file);
   ruby_run_node(node);
   return 0;
}

And here is my test script:

require 'tk'

root = TkRoot.new { title "Hello, World!" }
TkLabel.new(root) do
    text 'Hello, World!'
    pack { padx 15 ; pady 15; side 'left' }
end
Tk.mainloop


Pretty simple stuff.

Here is a bit of debugging output:

/Users/kevin/Desktop/test.rb: [BUG] Segmentation fault
ruby 2.0.0p451 (2014-02-24 revision 45167) [universal.x86_64-darwin13]

Application Specific Information:
abort() called

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   libsystem_kernel.dylib        	0x00007fff87119866 __pthread_kill + 10
1   libsystem_pthread.dylib       	0x00007fff8fb8f35c pthread_kill + 92
2   libsystem_c.dylib             	0x00007fff90df8b1a abort + 125
3   libruby.2.0.0.dylib           	0x000000010ab90d19 rb_bug + 184
4   libruby.2.0.0.dylib           	0x000000010ac25e9e 0x10ab67000 + 781982
5   libsystem_platform.dylib      	0x00007fff8995c5aa _sigtramp + 26
6   ???                           	000000000000000000 0 + 0
7   libruby.2.0.0.dylib           	0x000000010ac78b87 rb_iseq_eval_main + 95
8   libruby.2.0.0.dylib           	0x000000010ab959b0 0x10ab67000 + 190896
9   libruby.2.0.0.dylib           	0x000000010ab958f2 ruby_run_node + 47
10  test                          	0x000000010ab61f03 main + 67
11  libdyld.dylib                 	0x00007fff925a25fd start + 1

And here is how I compiled my stub app:

  gcc -Wall -v -o test test.c -lruby

Is what I'm trying to do possible, or is it a fool's errand? If this can 
be done, can anyone point me in the right direction about how to 
structure my C code?

Thanks,
Kevin
-- 
Kevin Walzer
Code by Kevin/Mobile Code by Kevin
http://www.codebykevin.com
http://www.wtmobilesoftware.com