thanks for the info.
I'll have a look at DAZ. Maybe I can find something helpful there.
though... I have my doubts :) 
I can't even cascade the issues down to something I could describe. C8 is just crashing. Either with the start-up window, or after a 30minutes session in the assembly room, or just when I'm saving a file, or when I move something in a scene from A to B....
I cannot replicate what happens when, so ...
This:

Quote - My gut reaction is to COMPLETELY remove C8 from your system and try again with the latest version.

is probably the best I can do up to now :) 
Or I just stay with C7, which runs perfectly smooth without really very few hick-ups