A little more information on this issue. First of all I re-installed to the most recent version. Something got goofed up when I tried to rollback plus I needed to better document what is happening.
As previously stated if I click on an instance of Kontakt7 (v. 7.13), make an edit to the VST (infinite brass), navigate to the Mixer view, click on another instance of Kontakt7, VEPro hangs and never returns until i forcibly close it.
However, I did discover that if I save my change to the server project after making each edit this issue didn't occur. In fact if I open an instance but don't make a change, I can open another instance without issue. Only if I make a change to a VST does the issue occur.