While trying to install maps from BaseCamp to the removable memory on my OR300 I'm getting a message saying that I've got a "map set of 1.8MB but only 2GB on the card, please select fewer maps and try again."
I've seen this error mentioned before, but can't figure out how to search for it.
Update:
Fixed it. Problem with DIY maps. I was substituting a map in my maps folder without updating the TDB file. This used to work in old MapSource, but no more, I guess.