Sound Devices have confirmed user reports of a serious issue with Windows 10 and removable media formatted as FAT32. Users are experiencing corruption of .WAV media files by simply inserting FAT32 formatted SD or CF cards into a Windows 10 computer. Files do not need to be opened or accessed in order for them to become corrupt. They told us...

We wish to emphasize that this problem exists with .wav files regardless of whether they were recorded on Sound Devices equipment or not. We strongly recommend not using Windows 10 with your Sound Devices created audio files.

This problem has already been reported to Microsoft who will hopefully issue a fix, update, or further information on the behavior of Windows 10 with WAV files on FAT32 Media.