Welcome Ian,
Sorry to hear about the problem you're facing. As a matter of fact I run into similar issues myself at the moment, but VSL software engineers couldn't find a pattern in it, up to now.
If you see that VE Pro writes crash dumps, please send them to support@vsl.co.at - this would help to hunt down the culprit.
TIA and kind regards,
/Dietz - Vienna Symphonic Library