Perfectly clear causes PSP 2018 to crash on exit

[ex1500]

Hi All,

Just bought PSP 2018 Ultimate. PSP itself seems to run fine, but every time I use the Perfectly Clear plugin and exit PSP, an error message is displayed indicating that PSP has stopped working. Tried to reinstall (first only 64bit, then again with 32bit and 64bit, same result. Tested with several images, cleaned Windows temp folder (think this once was a Corel issue), no difference.
As I got a very nice deal (Cyber Monday), I am not going to return the software, but a solution would be much appreciated..Any ideas?