While I've been successful in generating 15x15 PUZ files via TXT using Across Lite, when I've played with generating 21x21 PUZ files, I've had this error that amounts to a incorrectly specified grid size. I checked it two or three times and don't see where I'm going wrong (grid size specified okay, entered grid the proper dimensions). Does anyone have any suggestions on other things that might be generating this error?
Edit: Nevermind. I made a second separate attempt that worked out. So I was probably just getting cross-eyed in counting.