I can save you lots of messing around and time. During the tracking of another bug which is now fixed these lines were added to the file wacs_quickinsert.js
if you comment them out or remove them Sculptor will work without a hitch and you can change preset as you wish.
The lines look like this:
//Need to reset the global index to fix bug 6299 - DC
These are the lines 495, 496, 497. I hope that helps in saving you time.