From: Eric Hodel <drbrain@...7.net>
Date: 2009-06-20T07:46:09+09:00
Subject: Re: [BUG] cross-thread violation on rb_gc()

On Jun 19, 2009, at 05:24, Tim Hunter wrote:
> A friend of mine, new to Ruby, gets this error when he runs a  
> program I
> gave him. He's running 1.8.6 (2009-03-31) [x86_64-linux]. I can't
> reproduce the problem with any of the versions of Ruby I have  
> installed
> on 32-bit Ubuntu and OS X.
>
> The program makes heavy use of Ruby's memory allocation routines
> (xmalloc, etc.).
>
> Google shows a lot of hits involving Merb, which is not in use here.
>
> Any ideas about the problem and what he can do to fix it?

He could start by posting a backtrace.