Well I looked on the wiki and did some digging on the site and couldn't figure this out, does the error "Firefox can't find the file at aos://2114337966" mean that I am having issues connecting to a server, or that the game didn't install correctly? I haven't played since they revamped the website. Also, the server finder thing I used isn't finding any servers. could this be a browser issue?

looks like a bad install.

I just uninstalled and reinstalled, same issue.

I think it has to do with Firefox not knowing how to handle the aos extension, or whatever. Not exactly sure how to fix it.

Some people have been reporting that it works with IE9 for them when it didn;t work with Firefox. No idea why, but just a thought.

You should also try to use a Server Browser, and not the actual website.

I have whichever one is shortcutted as Catch_em_all and its not working..

Try this: go to the start menu, run, copy the address to client.exe, then a space, then "-aos://#######".

Example below:
"C:\Program Files\Ace of Spades\client.exe" -aos://386903174

I use Firefox 4. I have no problem following aos:// links.

nor do i. i use it fine on 4.1

yo just delet anything that has to do with aos then reinstall it. thats what i did, worked too.