There was a new mandatory a few days ago so 1.0.3.4 and above would be the "correct" version.
You may want to try to to delete the "blocks" folder and "chainstate" folder.
I'm not sure about it but it could be possible that all the other nodes temporarily banned you since you were spamming them with the wrong version.
Ok, so the 900K i mined on the other chain is worthless I guess? Deleted the blocks folder and chainstate, downloaded an installed 1.0.3.5, and all those coins are "gone" from my wallet.