First off, pointing a node at your scratchpad is considered poor form around here because anyone doing a Super Search later to find your node may not be able to figure out what you're doing if you changed your scratchpad.

Second, use [pad://Catharsis], e.g., Catharsis's scratchpad, to link to your scratchpad - that way you don't log anyone out.

Finally, what version of perl, XML::Twig, and XML::Parser do you have installed/are you using? I found that by upgrading from 5.6 to 5.8.1, I got rid of all my XML::Twig crashes. I've also found that 5.8.7 fixes some other crashes I've been experiencing compared to 5.8.6. So it does pay here to upgrade to the latest possible stable version.