I too am experiencing the exact problem, reinstalling didn't fix it either Basically to get it to crash 100% (For me) is:
open any image > create a layer > delete the layer that was created > create and delete the same way a few times (3 - 4 works) >
then click "Open Image" or "New Image" in the history and watch it crash
It really sucks when im editing a texture and go "oh wait" and hold ctrl z, it then crashes and I realize I never saved it xD
Really love using PDN and hope for this to be resolved