Need help with Scar error!

[nickrocks212]

the error is like this:
Line 431: [Error] (3032:26): Unknown identifier 'MMX1' in script D:\My download\Games\Runescape\SCAR 3.12\Scripts\srl\srl\core\MouseFlag.scar

PLZZZ help me!

 

[klinnks]

something wrong with the script? Do you have SRL installed and all includes?