This did my head in - HELP!!!

I opened up your file and noticed that the orientation of the path spline was not +Z. This may be the problem, as the rectangle flips on the wrong axis as it negotiates the corner. See the fix .c4d file at http://www.birdhausdesign.com/public/

Thank you good people!

Bear - looks like there are several overlapping polys in the corners in your file. The shape is fine - thanks, but the geometry is "un-clean".

jimzepellin - I must say I am not aware of the setting you mentioned.

However I found a strange solution, I don't understand it, but hey, after all I don't have to, do I?

"Round" the path with more than 6 (original) points seems to work when the path is rounded with 11 or 16 points - strange indeed.

I must say that after 6 years of using c4d, this one really stumps me. I see no logic in the behaviour, and from where I seat, I'd be tempted to use the word bug. At the end of a day, what could be easier than sweeping a rectangle along a path?

Thanks again, more words of wisdom are welcome.

IQ=0