Issue Nuendo 6 Kontakt Player crashes Nuendo 6

[ISSUE] Installed Nuendo 6 (64bit) today on PC, Kontakt Player 5 makes Nuendo 6 Crash.

Nuendo 6 (64) is installed successfully this morning.
Checked the routing and opened an Nuendo 5.5 (64bit) project where I have used the Kontakt Player 5 as VST instrument.
Once the loaded Kontakt Player 5 is manipulated (clicked) it crashes Nuendo 6.
No other solution then to restart the computer.
Anybody knows how to fix that?