Thanks for all that Bree...sadly though, problem still exists. Any other suggestions?

Windows 10 Pro 64-bit, Version:1809, Build:17763.195

Controlled folder access is OFF

Compatibiltiy is...

Thanks both.

Yes I have tried the compatibility checker since the update. 'Test the Program' launches PSP and it behaves normally as expected. The problem of opening image files still remains.
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Since the Windows 10 Spring update my Paint Shop Pro 7.04 (PSP7) has never worked right. Ive gone through every compatibility setting and they dont fix the following problem:

When I click on an...

Is there any possible way to have a 3d taskbar and window borders like earlier versions of Windows?

Really not liking the 'flat everything' and limited customisation.

Edit: By 3D I mean...