Shelling of extruded circle...

 From:  blowlamp
5797.2 
Confirmed here too.
There's also a problem if you delete one of the circular end-caps and then try to shell it from just the surfaces.
It seems that the inner band gets incorrectly formed into a kind of pinched end-cap.

All appears to work OK in v2.

Martin(2).

EDITED: 27 Mar 2013 by BLOWLAMP