Guess I goofed again...lol!!! We are talking WinFX 5. ODPlus is another thread....I got mixed up a tad. sorry.
I took a look at your registry and everything seems to be OK, so I'm not quite sure what the issue is. Let's try something. Can you uninstall WindowFX completely, then delete these registry keys (if they exist, tell me if they don't):
Then try re-installing it using Stardock Central, and see if it still shows as uninstalled or as an update.