Fix from minecraftforum
Instructions for 64 bit:
Step 1: Right click cmd.exe
Step 2: Click on "Run as Administrator" and enter the password.
Step 3: Enter "CD /d C:/Windows/System32" without quotes.
Step 4: Enter "COPY atio6axx.dll .dll" without quotes. For Mobile cards (M) enter "copy atio6axx.dll atiogl64.dll"
Step 5: Close CMD, then run your program.