I am just starting out on skin studio and do not have much experience using the program or skinning. i have just created my first skin but after many hours of work, I have decided to test the skin. However when I go to test the skin or press F9, I get an error that says 'invalid floating point operation'. I have no idea what this means and do not know how to fix it. The same error occurs when I try to save a UIS 2 or UIS 1 skin. I am not sure how to try the skin out since I can not save it as a windows blind file. Any help would be greatly appriciated.