Cubase Artist 9.5 Crashes any time

I’m back with the same old problem. I had to do a project cd for a customer on Cubase 9 elements because I have not been able to resolve the crashing issue with cubase 9.5 artist. I am now back trying to resolve the cubase 9.5 crash issue. It still just crashes even when just listening to the mix. No warning and not always in the same place. No new crash dmp. files so I imagine it is the same problem. What ever it is!! There is a error code on the dmp file that says "The parameter is incorrect (0x80070057) so I googled it and tried the fix to scan the C drive and found no errors. Note: I have just downloaded and installed the 9.5.5 update so that should be all good and that didn’t fix the problem. Not sure where to go from here. Any help is appreciated.