Scar Not Working Right..

Well Everytime i Start it . It Wont Work i Either get a Error. or it Wont attack or Anything. I just got this Error with the Script

Arshur2Good's Autofighter 2.5

Line 32: [Error] (18111:1): Duplicate identifier 'a' in script

Can Someone Help me. Or get me a Good Autofighter Script that is Easy to Use.
Im trying to get it on overnight at the Goblin house near Lumby

 

The script was made for an older version of the SRL.