I got the SanDisk - Ultra PLUS 16GB SDHC UHS-I Memory Card from best buy. It worked to get it to factory reset. However, for some reason the log files are not being posted to the card. It IS posting pictures and videos, but no log.
But then I saw this post and think I need to go look at all my parameters and see if they are missing too!
https://discuss.ardupilot.org/t/calibrating-skyviper-v2450/24402/4
this guy’s quad got totally messed up after a facreset.