Original Heroes 4 - 3.0 is protected with SafeDisc 2.52 a old SafeDisc version.
I don't think Winds of War are using any higher becuase it also a 3.0 Heroes.
So try bOOls eYe SafeDiscCleaner or our moderator SafeDisc eraser. =)
Can be found one of the link in the stickeys
