OK, so anyone who knows me very well knows I'm a big fan of Paint Shop Pro.  I'm not a huge Photoshop fan, although I like Fireworks, and some other graphics programs.  See, I started out on Aldus Photostyler, and was a big IrfanView user, when Jasc originally came to market with PSP.  Anyhow, I'm running the Windows 8 CP on a new AMD A6-3500 APU with Radeon Graphics, with 4GB of RAM. Obviously it's 64bit, but it has more than enough power to run PSP X4.  When I installed PSP X4 however, either with the "Try before you buy" version, or the retail purchased download I have, it fails to start after install.   Checking the event logs pointed to the culprit in the Application event logs:

Faulting application name: Corel PaintShop Pro.exe, version: 14.0.0.114, time stamp: 0x4e0f4a24
Faulting module name: mfc90u.dll, version: 9.0.30729.4148, time stamp: 0x4a596d4a
Exception code: 0xc0000005
Fault offset: 0x000a11af
Faulting process id: 0x1bc
Faulting application start time: 0x01cd30039bea85cd
Faulting application path: C:\Program Files (x86)\Corel\Corel PaintShop Pro X4\Corel PaintShop Pro.exe
Faulting module path: C:\Windows\WinSxS\x86_microsoft.vc90.mfc_1fc8b3b9a1e18e3b_9.0.30729.4148_none_4bf5400abf9d60b7\mfc90u.dll

Hmmm... great.  A Visual C++ redistributable error.  Some preliminary rectification efforts failed for me, as did finding much information online.  I did however stumble upon another forum that led me to the right solution: Download the Service Pack 1 for PSP X4.

That did the trick, and now I can resume my alter-ego career in web design.  :)