Ok, both of these (Corzair's hull sweep and Wibble's finger) are fixed for the next beta release.

The bug involved multiple profiles when the rails were sticking out past the profile instead of ending directly at the profile.

Corzair, this bug is probably why you were running into general problems trying to sweep with more than one profile before.

Thanks both of you for posting the sample files, those make it a lot easier to track down what is happening.

- Michael