wow this app is so WRONG! the camber feature for example is sooooo wrong.. it makes me choose the minimum camber available and it is still not touching the whole tyre on the ground. I don`t know how you did that but you should fix that or delete this feature. If that is wrong like that, I can`t even imagie the rest of the app.. it is useless. camber extravaganza is perfect for this purpose.
A wheel window could be throwing a run time error.