No, what you're referring to is some folks formatting SDXC cards with FAT32 partition, using utilities like Fat32Formatter. In that case, one would expect problems as if the receiver unit writes data expecting standard FAT32 FS. Situation is different here as NEX supports NTFS (that, Pioneer correctly states in their manual), and the SDXC card is formatted in proper NTFS. I have not run into any issues so far with hundreds of media files on my 256GB SDXC card.