Well, i had a few first person experience with map corruption. It happened 4 times.
1) I closed my CPU while the
Wc3 Editor on my map was on. I reopened it and nothing was in my map, or it wouldnt load it at all !
2) I closed the
wc3 using Task Manager (becouse of lag) and ... y it got corrupted somehow (it doesnt get corrupted all the times though)
3) I saved the map and moved it (drag and drop) to another folder. AND IT GOT CORRUPTED !!!! LOL WORLD IS GOING MAD!!!
4) I saved my map with the name of my old corrupted map... u know how it ended up.
Though i belive none of these things happened to u.... but it might help u out