Alright, went back and re-downloaded the map. Worked so far. Downloaded the map, no problem. May have been an internet issue, but seeing as I had tried yesterday with similar issues, i don't know.
And i don't know about the error code 3 thing, but it did say at the very end of another error message about Contacting Aidan about : Error Code 3. No idea, that's all it said.
For now, thanks for the help.