Since updating I keep receiving "URLs with the type "file:" are not supported" error message...

I'm getting the same thing!

same here!

When do you see the message? In Finder? In Safari? At normal work, or when browsing the web/mail/etc?

Yep same here. Message keeps popping up through normal work. iChat, Firefox,Mail, and Terminal are the applications I have running. It seems to pop up at random.

It doesn't seem connected with any application in particular. It appears without iChat, Firefox, Mail or Terminal running. It seems it's connected with Finder or other system elements.

BTW, it doesn't show up all the time. It would show up a few times and then it would subside.

I'm getting the same error as well. The message pops up before I really even get any apps going after a reboot. Hope this helps someone figure out the issue.

Same here, someone please help! Sooo annoying.

+1 over here, same issue ... still looking for a solution

Same problem here, looking for a solution, it's very annoying...

I am getting the same error as well since updating to Lion, independant of what programs I am running. It often pops up twice in rapid succession.

There was a problem connecting to the server. URLs with the type "file:" are not supported.

I'm receiving the same error message since updating to Lion; started happening immediately. Error reads:

There was a problem connecting to the server. URLs with the type "file:" are not supported.

Most recently, my laptop was just sitting with my iGoogle homepage open (Safari). After sitting for about 10 minutes, the message just popped up. Whenever I get the message, I click "OK", then it immediately pops up a second time. I click "OK", and then it goes away, only to pop up again (twice everytime) in the next 30 minutes.

Yeah, I'm getting the same error. I hope Apple is reading these messages and will come out with a fix soon. This is what we get for being early adopters.

I turned off my Time Machine and it seems to have fixed it. Apparently it only comes up when the computer has Time Machine turned on and isn't connected to the Hard Drive of choice.

Ha! This might be it! I also have an exclamation mark on the Time Machine icon and it says Backup Delayed... in the menu. It looks like it's a Time Machine bug.

turn time machine off when it is not connected to external drive - that seems to solve the issue - hope Apple fixes this bug soon -