I got one too but thought I knew the problem. Fixed what I thought was the problem or it was just a coincidence.
I had added an event and got the 342 error msg. It's been awhile since I've added an event and wasn't sure as to the format for adding the address. Went back in, changed it to multi-line, and then everything was hunky dory.
Or maybe not. The usual map of the location did not display.