Groove Agent Pattern Bugs

Anyone else experience the bugs I am having with patterns in Groove Agent SE4?

Sometimes when I drag a pattern to a pad in pattern mode, it won’t play the pattern. It will not trigger from the pad or from a keyboard. Last night a pattern (not very long) crashed Cubase every time I dragged it to the pad.

Am I doing something wrong or is this just buggy?

Note: I am using entirely my own homemade samples which are 32 bit float. Maybe that is why.