I have not had any problems either, but then I am only on my first set. Some folks said they accidently put two blades on the cutter and it did not work correctly. Found the problem, removed one of the blades , and it cuts fine.
I have not seen the cutter some of the blades came with, but I would definitely be using my own cutter. I have a Fiskars, ok, several Fiskars.
Good luck.