Originally Posted by Cari-in-Oly

Ania I don't think I've used any of the built in designs except for letters so I don't really know. Loops can be caused by a number of things. Sticky stabilizer gumming up the needle, wrong tension, threads getting caught somewhere, wrong stabilizer for the fabric, sometimes it's a mystery. I can't say I've ever had a real problem like that. I do get an occasional loop with all of my machines, I'm sure everyone does. Slowing the machine down and using a thread stand can help with a lot of issues. Embroidery Library does have beautiful designs but I find a lot of them are pretty dense so I'll use a thinner 60wt thread, or I'll enlarge the design by 5% in the machine. That helps with the density.
Also, Wilcom True Sizer is a free program that will change formats for you.

Cari