I haven't had any trouble pressing the Fairy Frost fabrics. Having said that, I have had my iron stain a quilt in the past. I believe because I had used distilled water in it previously and did not empty it when I was done pressing that the water caused a rust to form inside the reservoir. The next time I steam pressed a quilt top with the same iron the rust made spots all over the quilt top. The iron has been replaced and I haven't used steam since. If I have a tough wrinkle that needs steam, I use a spray bottle instead. So sorry you had a problem. I hope it all has disappeared once the quilt is dry.