Hi! I'm having trouble with Step 3.) Click on the - sign next to Ploppables on the list on the left side. I can not find this... In the plugin manager, i have 3 choices on the left : models , descriptors , lots i can access to models and lots and click on the bat i want to modify, but there is no ploppables anywhere. In the descriptors section, i can not click on the BAT ; it says : corrupted plug-in. . . any help would be warmly welcome