I did not modify the script and as far as i can see there is no missing { in this.
The script is found in the item_combo_db.txt and looks like:
1287:15123,{ if (getequiprefinerycnt(EQI_HAND_R) >= 7) { autobonus "{ bonus bIgnoreDefClass,Class_Normal; }",1000,3000,BF_SHORT,BF_NORMAL; } /* Confirm: Success rate */ }
Maybe i'm looking in the wrong place?