I don't use psp but I do have the same problem sometimes with photoshop. I found out that some tools made for earlier versions of PS don't work with the lastest version. Perhaps that's the same problem in psp.
OnePlus 5T review: Hands-on
Illustrator Andrés Lozano on his improv line work, brazen use of colours & hand sketching
iPhone X review
Comment envoyer gratuitement des gros fichiers ?