I had the download problem and now I also have the unlock problem. I couldn't upload the file - I got Error - The file was unreadable by the system. When I tried unlocking using the code it told me the code was wrong. Deleting the last Q in the code did work however. Thank you.
I managed to download one cartridge, but am getting the error message described in posts above for other cartridges. Please let me know if a fix is found. I am new to this and would like to try these games! Thanks.