If it errors, you should get a lua error pop up that you can copy and paste here and it'll tell me what's going on. Fort brew should only cast if your left alt key is down but I'll double check it when I get home from school.
You can remove the --Target-- option at the start to stop it from picking up the next target if you don't have one selected. Or as was mentioned, check the box requiring combat.nice profile so far kuu, any chance you can make it so it dosnt always try to attack things when out of combat?