Thanks to Jeff for letting me know that a newer version of the Plazmic 4.7 CDK is available online. This version supposedly has much less crashes during export including skinning issues. Still looks like there is a memory leak though. This build is version 22.214.171.124 and is from Feb 13th 2009.
Let me know what you find in the comments!
Thanks to Greyv on the forums for the screenshot.