Cub 6.5 and Machinedrum Start Problem!

after update to 6.5 i had a prob if Cubase is connect via TM-1 to the Machinedrum (elektron). (Cubase Master sends Midiclock to MD which is Slave) If i start the Song Cubase stops an freeze! This behavior is new in 6.5 ind 6.04 no Prob. No difference if MD is started befor Cub. or after Cub.
I found a workaround : when Cub. stopps and freeze i start simultan sysex editor like C6 , now a little error message appears and in a spooky way Cubase starts to play. :astonished:
Is there a new prob to intialize the TM-1 ?