I don't know about compatibility with the Grand Calibur as I thought they were useable in most things, but I couldn't get my Cuttlebug to cut them either and it was down to the plates I was using. I don't know how the plates configure with the the Grand Calibur but is there a different order you could try that might work better? Is there anywhere that us die cutters can go that lists all the dies and which machines they are compatible with as something like that would be really useful.