Using a prime GO, In engine prime i have the same collection of songs as a crate and a playlist but after exporting to my sd card using sync manager they both show as empty of tracks. I have tried reformatting the sd card and adding them manually but they dont appear. They are however on a usb drive synced with the same method.
I have no problem, what size and brand of the SD card? Make sure the SD card is formatted to ExFAT.