I got the same error again the other day i was in act 5 worldstone keep lvl 2 on my necro.... It crashed I restarted the game and havent got that error since ... I was getting that error everytime i play ... I dont understand what the error is refderencing
its sprite decompression error. means certain assets (images) from your diablo 2 installation are corrupted. try downloading the game from a different source, that will work 100%