What does this mean and how do I proceed?

I haven't ever heard of that before.  can you give us more details?  what were you doing?  do you know which plugin it was talking about?

tell us a bit about the computer and sound card/interface...as well as the specific plug in's name and the company that makes it..... I have not heard of the VPA thing either. 

I haven't heard of it either, but others have.
A quick search showed several results by people using a different DAW and their solution was to run their program as administrator.
Right-click the MC 6 icon and select Run As Administrator; see if that helps.
 
It seems that VPA has something to do with online chat.