Im begiming to think this has everything to do with an issue with vep and kontakt... i note that version 5 of vepro is much more stable even with latest version of kontakt.. some bug was clearly introduced in the v6 series of vepro... im wondering if kontakt 6 will be better or worse?
sitting on their hands and not talking to customers isn't helping.. if there were a valid alternative id give it. try at this point.. v6 has been utter crap.. i went through one day of just uninstalling and going back to each realesed version of v6 and seeing if it was some bug introduced mid way along. but no good.. first version out there hates kontakt instances... also.. notice that kontakt freezes till i hit a midi note on my keyboard.. like it doesn't think its connected or something... v5 seems much more stable... something clearly changed...