ERROR! "Cant Find Msvcr71.Dll"
This seems to be a problem, cropping up more and more recently.
Heres the link to the missing file. Missing Msvcr71.dll
Its a zip file so it can be extracted with winzip/winrar/ any other achive program.. Just extract the zip and copy the .DLL file to your main Frets on Fire folder ( thats the one with FretsonFire.exe in it )
Then run the game and it should work fine.
Ref: http://www.fretsonfire.net/cgi-bin/ikonboard.cgi?act=ST;f=3;t=13146