system
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I have the same problem, Re: Paint Shop Pro 9 has been working on my pc for years with no problems. Yesterday Avast installed an update and since the it has not worked. I ran System restore to a date last week and Paint started working again and Avast went back to it’s old logo. After about an hour using Paint it stopped again because Avast updated. This problem is entirely with Avast and they will not reconise it of by looks of it, fix it. Get the same message when I tried to contact them that they can’t find my registration. Maybe a law suit will solve it.
Only thing that works is to go to Settings/Troubleshooting and unchecking "Enable Avast self-defense module.