mobile

I recently upgraded from stock opo cyanogen to the cyanogen nightlies. now whenever i go back to TWRP to make a backup, it breaks my os and i get stuck in a bootloop. i have to factory reset my phone and set everything up again, and all of the backups are just bootloops. i already tried re-flashing TWRP and cyanogen, both through the TWRP manager and through the fastboot flash recovery command. if anyone has a solution it would be much appreciated.