Running some modems this year and they were working fine till I formatted cards for a swap. I use a Mac and I format with Exfat. Turns out Moultrie cams do not like that. After waiting on hold with Moultrie for 30 minutes then not getting a call back I attempted to re format with MS-DOS(fat) and problem solved. I’ve been running camera for years and though I had it all dialed in. You learn something new every day. At least you hope to. Anyway I hope this helps someone.