Yes, I am having this same problem. Unfortunately--perhaps because of gridrepublic?--I am unable to "detach" from the project to try to reset it to the 'correct' URL.

Should I use, in GR, the Remove button (on the Projects tab, Edit subtab)? Unfortunately, I am not really sure what the consequences are of removing it from all computers ("This will stop work on this project on all your computers"...). (I don't even recognize some of the computers there, as an additional wrinkle.)