- Is the card in the player or are you using a micro so card reader ?
I copied the files using my the SD reader from my laptop (Sony Vaio).
- What software do you use to copy your files and folders to your card ?
Win 8.1 SL + Total Commander 8.51
- Do you ever see the files and folders in the proper destination using Win File Explorer ?
Yes, checked before inserting the card into SanDisk.
- Do you use the PC “Eject” command to stop the PC - player communication before disconnecting the player ?
Mmm I didn’t connected the player in this case, but previously (before buying the SD card) I could ejected without “safe eject” the player. That could be an issue with a SD card?
- When & how do you observe your music files are missing?
The Clip Sport cannot find them by Music Mode and Folder Mode ?
Your PC cannot find them during a follow-up search with Win File Explorer ?
Both cases. Inmediately after the SanDisk media scan finished the files were not there anymore.
- I think the Clip Sport can access high capacity micro SD cards formatted as FAT32.
How is your micro sd card formatted ?
FAT32
Let me know if I can check anything else.