That doesn't look like a Perl error message. Something else may be going on.

The trick with these sorts of things is to reproduce the behaviour with the smallest possible chunk of code. Copy everything you need to a safe place (for backup), then start excising bits of code. When you stop seeing the error message, you know the part you just took out may be the culprit. Put that code back in, and excise the code around that, making sure you keep seeing the error message. Pretty soon you should have a small example that shows the problem.

Once you have the smallest example that demonstrates the problem, so it to us. :)

Good luck ;)