Cubase 10.5.12 crashes when I delete empty Battery 4 and Massive tracks

So I run a normal project session.

I load Native Instruments tracks no problem

I try to delete empty Battery4 and Massive tracks and it causes an immediate crash

Both Battery4 and Massive are up to date

I have uploaded crash logs with this problem on this forum but I get no feedback… is there a way of sending them to Steinberg direct ?