What do you mean by 'locked'?
You save them and then can't open them again?

Something could be corrupted in which case you might like to try to reset PSPX2 using the Shift key method.
Save your current workspace.
Close PSP.
Open PSP and hold the Shift key as you open it. This will generate a message telling you that PSP is reverting to it's default settings. Click OK.
Try again .
You will have to reset some settings in File>Preferences>General Preferences if you had previously changed any.

Grenou