VSL support was kind and sendt me a demo serial for VEpro4. I am currently testing it out with Play, Spaces and Kontakt running at the same time.
I have now been running it for 15minutes and have not been able to crash it. Will test more because it hasn't allways crashed instantly, but so far things might be looking up.
Will write an update later when i have some definitive anwser if it works or not, to bad you cant import VEpro5 metaframes into VEpro4 ^^