- Ensure that Paint Shop Pro is not running 

- Click Start, choose Run, and type "regedit" (without the inverted commas) in the Open text entry box 

- Click OK 

- When the Registry Editor opens, click Registry > Export Registry File, choose a filename, and save the file. The program will automatically add a REG extension on to the specified filename when it is saved. This file can serve as a backup if necessary 

- After creating the backup, double-click on the following sequence of folders: 

HKEY_CURRENT_USER 

Software 

Jasc 

- The word "Jasc" should now be highlighted. If not, click on the folder once again. 
- Hit the Delete key on your keyboard, and click "Yes" to confirm this deletion. 
- Close the Registry Editor using the X icon at the top-right of the screen 

Now launch Paint Shop Pro. You will notice that the program acts as a new installation. Simply skip the registration process, set your file format preferences and try to emulate the problems you were encountering. 

If the problem persists, I would recommend uninstalling the Paint Shop Pro 8.10 Update using the Add/Remove Programs list (Start > Settings > Control Panel > Add/Remove Programs), then uninstalling the Paint Shop Pro 8 application. Now insert the Paint Shop Pro 8 CD-ROM and reinstall the software, and immediately apply the 8.10 patch.