zeek1 (10/1/2022)
Same issues. Just updated to the CC4 4.1. Can't export any custom characters
I encountered that also, but after I did Help => Activate Purchased Items, the watermark went away. I saved the character and the next time I loaded it there was no watermark.
A more permanent solution for now is to uninstall the Headshot 1000+ Morph pack and then reinstall it.