Funny. I don't encounter major problems with VUE inf. No memory leaks, no crashes.
The VUE XStream in conjunction with 3ds max causes more problems and max crashes every now and then. But max crashes every now and then wether you use VUE or any other given plugin... ;-)

I've been application programmer for some years and I know, how hard it is, to program a software, that is mainly errorfree. Impossible? To be honest, we never published one, that was without known issues. Problem is, that an application running on one PC must not on another.
Problems depend on a lot of circumstances, like hardware and Operating system constellation as well as on other installed programs or packages.
Thats why software producers need us paying customers as beta-testers. :-)