Geez Eric, you seem to have more problems than I ever do. I had to install everything from scratch to my Laptop so I could race (after my Gaming HDD died). It all went smoothly, no hassles at all.
I can't help but think that you are not being careful enough with a few things, firstly the car pack specified was A8-1, not A8W-1.
Did you read my update info in the RSRBR Install sticky post in the RBR Forum:
"4. Car Packs : Here
Please note: New updates for Car Packs have been added, 10th January 2010.
If you already have the full car pack installed, you can just add the individual updated packs found Here
Or you can add the full updated car pack found Here "
If you don't want to go through the time required to install the full pack, then you can install just the car packs required, you can do that by individual car pack, by group, or by the whole thing. Check here for the options:
http://forum.rallyesim.fr/viewforum.php?f=350&sid=272349394bcb2be965f94a80ccd9b779
Using the individual or group packs is often a good idea when some of the car packs are updated.
I simply download the needed pack, then run the installer, and that's it. Very simple.
For this Rally, you didn't even need to update, the A8-1 Pack hadn't been updated.
I'm also edgy about your statement that you removed the all the cars to re-install, not sure what you did, or why, but that may lead to future problems. Deleting files manually is risky. If ever you need to update cars, just re-install the pack or update again.
Hang in there mate, this sim is far too good to simply throw up your hands in frustration.
EDIT: Eric, your results are still recorded in the Server (I just checked), so I can retrieve them.