Well I should say check for ANY z direction. I can't open max right now but if you take that same box, rotate like 3 degrees in the z direction and try to run your script on that side that used to work, does it still work? I'm thinking we need a new function for any faces that have any z direction...
mLichy: It needs to be an open edge loop. Basically you select the edges you want to unbevel and then one more on each side and run the script. It uses the end edges to get their intersection point . If that's' not the problem then there's a bug Here's Seneca's explanation of his script... mine works just the same. I…