Quickutz has made an addition to paper thickness in gsm instead of lbs. You will find the Appendix here .

When you install and run it, you get the following box where you select GSM (UK)

Then you make two lists, one with no installed paper thicknesses and one of those installed. Here's how it looked at me.

And after I cleaned, I have these, then only paper I know - yay!

Silhouette CraftRobo and use the same software, so even if the file is from Quikutz it works great with CraftRobo.

Paper thickness you already have will not go away!