Real Guitar 3 and Cubase 7.06

I´m in contact with the musiclab support but they are helpless.
I wanna drag the pattern into a cubase track. If I click on the patternwindow and drag to side, the plugin becomes white an than comes a error popup from cubase.
In stand alone real guitar works this finely!
Can someone help?

This is working for me, are you on an Mac or PC?

If you are on Mac, and I read about windows becoming white, my first reaction is then, “Are you working in 32-bit?” then, “Is the project getting low on RAM?” (e.g. lots of instruments loaded into, say, Kontakt?)

Windows 7; 64bit an 8GB Ram