[Bug 11188] Most attempts to save in Warcraft III 1.21a Reign of Chaos crash the game

http://bugs.winehq.org/show_bug.cgi?id=11188

--- Comment #111 from Claudio   2009-01-15 10:29:22 ---
I loaded your saved game, and nothing goes wrong. A short in-game
cutscene is played, and then I am sent to the next mission.

Is it possible that you have a "dirty" source tree?
I'd try something in the league of:

git clean -x -d -f
git checkout -f

then apply the p1 patch and rebuid (from configure).
Beware that all non-tracked files will be removed from your source tree.