One of my maps appears to be corrupted

Gaxhar

I have a map called 'Mountainhome'. It failed to get enough points to prestige past 5, so I did the reset option to redo level 5. Now the map has no thumbnail, and when I try to load it, at about 12% it says "Error code: You will return to the sanctuary". It's getting 0 plays (presumably because nobody can load it) and it's going to burn all the way through level 5 again with 0 prestige points because I can't load it and deactivate it again.