Hi, I've got the same problem, only 2 files (FOUND.000 & .001) have appeared, the second after the second library update, so it has become pretty annoying.Thank you for response. I have enabled shows hidden files in my Windows Explorer, but there are no such hidden folder. For now, additional FOUND.001 folder appeared as well. I believe reformat will solve this, but with my collection, it's too much of a hassle. For now. I will continue experimentation, but I am absolutely in love with this player. Many comments and requests will be posted.
Have you found a solution on this? I haven't found a software update to fix it, yet.
Also, I would like to avoid formatting the sd card, since it has over 80GB of music in it, but if you have done it and it worked, please let me know!
Thanks!