I'm running V49 software, and a Samsung 128 GB Pro Endurance micro SD card. Every now and then (once an hour or so), I will get a pair of short .MP4 files, which are not playable. This has happened even with my motorcycle sitting in the garage on a cool day. What's going on here? It's not the SD card - this was happening on a Samsung 256 GB Evo card as well.