Another explanation is a problem with the SD card controller software .

FORBES: Is Your Android Smartphone's SD Card Causing It to Crash or Lose Data?

The housing for the HDMI stick has been moved to the rear of the controller and the stick itself now supports an expandable 32GB MicroSD card slot in response to overwhelming demand.

ENGADGET: GameStick reveals final backer-aided design, dock for peripherals

The new 32GB memory card incorporates 32Gb 3-bit NAND flash memory chips and a proprietary 3-bit NAND controller to deliver the high performance.

ENGADGET: Samsung announces 32GB microSD card capable of 12MBps write speeds