[Havoc_covaH]

I get the same problem with localization error. But I don't have your death message problem.
When I get my localization error, almost everything has "LOCALIZATION ERROR" in front of it.

Try deleting "developer" in your
MOHAA shortcut (right click it) >Properties>Target

Or try putting what you have in your target field in all of the shortcuts to MOHAA (in the start menu and in "my computer").

I doubt my solutions but like I said, give it a try.