Hi Paul / Thank You very much for your help. I immediately updated to 6.0.15389, but it still has the same issue unsolved.
Btw I found some other clues ; I'm using two Steinberg's e-licenser.
1st - cubase8.0, VEP6 / and 2nd - Nuendo 7.0, VEP6 and MIR PRO, MIR roompacks
1st e-licenser has no problem and operates VEP6 very well. But whenever I run VEP6 by 2nd e-licenser, by microsoft remote mode, VEP6 appears a message that <It seems you are starting the application through a Remote desktop Connection. This application needs to run a local...>That message is not from the latest update, but from the past version. Anyway, so then, I have to disconnect remote mode once and re-connect, and VEP6 starts automatically. and then, after Ioading the VST Window in the VEP, It crashes at the time seperating that window from docking.
My 2nd e-licenser is definitely no problem because it operates very well in the local mode on my master PC, but I think it's probably the issue concerned with e-licenser or MIR.
now I'm attaching some more photoes about the issue.