Torfinn,
I think that is for those that have thread count licensing.
I believe there was an issue with the routine that is fixed in one of the Cloverleaf(R) 5.6 Revs. I would get to the latest Rev (Rev 2 I think) and try again.
email: jim.kosloskey@jim-kosloskey.com 29+ years Cloverleaf, 59 years IT - old fart.