It cannot write Amiga floppies:
Ok, it can write savedisks and data disks, but it seems it cannot write any bootblocks. So transferring a game adf image to a real amiga floppy is impossible.
Are these floppies DD?? If not, then try to cover the extra hole with a bit of tape. I am not sure if this is needed with the catweasel, but it is definitely needed when trying to format in 720k format on a pc using HD floppies.