Trouble after 4.09m install

[woodchuck]

I downloaded 1946 from the UBI website for $10.00 awhile back.

I still have the downloaded files but I thought (mistakenly?) that it had to be installed over the original IL2 files.

So should I add/remove the malfuntioning il2 1946 install i have, and reinstall from the downloaded 1946 setup file i still have on the harddrive?

When I run "setup" from the unzipped 1946 I bought online it wants to do an uninstall so I stopped. I'm a bit afraid it is going to ask for a "verification key or code" which either didn't need or lost in the meantime.