Nostalrius Begins - Quality wow vanilla realm (1.12)

Everytime I try to open WoW it says "WoW.exe - Error" "The aplication couldn't start correctly (0xc0000005)." I reinstalled WoW, but seems to not work neither... :/

Aight guys, solved! I just used another download, which is from this web too "http://forum.nostalrius.org/viewtopic.php?f=32&t=3076" , just downloaded the torrent, and it works , maybe the other version had an error or something.

What the hell, I played 2 days and now the error comes again :C

A normal reboot solves all the x00054fi43e errors for me.
Try launching as an admin as well.