Eventmachine talk - Mar 2008 - popen pipe connection occasionally fails

Hi all,
I am encountering the following crash-causing bug using popen on occasion.
 I haven''t been able to narrow it down yet, but I am curious if anyone
else
has seen it or may have more information for me:

Workers::DviToPng::PipeProtocol
> terminate called after throwing an instance of
''std::runtime_error''
>   what():  unable to reap subprocess
> Abort trap
>
The following code is called to connect the pipe:

EventMachine::run do
>   # Open the connection to the dvipng shell command
>   EventMachine::popen $mock_dvipng_executable,
> Workers::DviToPng::PipeProtocol
>   EM::next_tick {
>     EventMachine::add_timer(3) { EventMachine::stop; violated("Event
loop
> took too long.") }
>   }
> end
>
This bug seems to happen on the first or second attempt, and then it
magically goes away.  Any ideas?

Thanks,
Duane Johnson
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