Is it possible to delete a rule created in error from "Edit Load Rules for Auto Load Combination Generation dialog"?
Yes, it is possible. First you need to unlock the table. Then, you can select a rule (which is basically a row in the table) by clicking on the leftmost cell of the row. This would highlight the entire row. Press DEL on the keyboard or right click to select delete option. Once the row is deleted, you need to commit the changes and lock the table. Finally close the window.