No matter what happens.

I've tried it all...(I think) I was able to log on last night and get to level 4 and thought to myself "hey let's log off for the night." So I do and decided I wanna see if I can run this in the morning so just to be safe run it and see what happens, I get an error message saying "...DivxDecoder.dll is missing from your computer. Try reinstalling the program to fix this problem." Naturally I come here, see that it asks to check if you have 1.12.1 I check and see I have 1.12 so I go and try to download the Nostalrius client, but I continue to get the "Aw, snap!" message after about 20% downloading, I've tried the other download on the forum, should I just get a new computer? what is happening? 
