Cannot open 15.1 patches into 16

hello , is anyone having this problem ? i cannot open patches from 15.1 into version 16 at all , any clue ?

ai color, this is not a known issue. can you post a simple patch that won’t open or see if the tty-console reports any errors onopen?

hi , i found out what the problem was , somewhere somehow i deleted the diff xml from the folder , i replaced with new one and all working now