The 2 greyed out cars don't matter. Looks like they just don't have any server slots. I do only see 1/1 for the 68 camaro? If Bill has it assigned to John, you'll not be able to get in. (needs another slot and you assigned to it)
Now, for the U2 cars, Im not sure. Certainly shouldn't crash your game. Need to make double sure you have the right cars/mod downloaded and installed. They may need all the Assetto Corsa DLC to run. (Assetto Corsa Ultimate Edition) I know you said you had the full version, with -all- DLC, but make sure you do.
Here's (download below) the 911s, Alpha, Cortina and Datsun.. Drag onto CM and "update over existing files"
If you -can't- get these cars to run offline, there's no use trying to get online. And I'll guess you're missing some DLC..
This is like an unpaid full time job for Bill and I apologize for contributing to his headache. So, I'd suggest we just lock this series after we get AG fixed up, until this series is over.. Just too many versions of files, updates, skins, etc. scattered through 24 pages.. In the future we need -all- files on page 1, and ONLY on page 1. Anytime there's an update or new skin, it should be sent to Bill so he can edit page 1 to add/delete all the new/old stuff..
That's my 2 dollars worth. No need for a Alt + 0162 ..
