Question about sweep.

 From:  stevecim
4937.1 
Hi All

been playing around with flow and sweep, I used flow to place a grid of squares around a sphere, worked great, them I used sweep to "thicken" out the curves. worked about 80%, ended with 4 sections that look like this.










I tried sweeping 1 section at a time, still ended the same.

Am i doing something wrong with sweep?

Cheers, Steve