Cubase 8.010 issue

Hi all.
I have installed all the latest drivers for C8pro and Trilian. I play a note on my key board and the note often sticks on. Latch mode in Trilian is off but the note releases again if I put latch mode on then off again. Trilian works fine Cubase 6. I tried it there again just to make sure and there is no problem there. Many thanks.