RDX cartridge auto-eject problem

[satellite360]

Hi

I have a new external HP RDX USB 3 backup device connected to a server running 2012R2 (device mode is fixed disk and firmware version 0227).  Backups are working but the cartridges (1TB, product# Q2044A) are always a real pain to load as they automatically eject half a dozen or more times immediately after I load them.  I power cycle the hardware, open up the RDX utility and run diagnostics, usually multiple times and eventually the cartridge will remain loaded.

Event Viewer is showing the following error:

RDXmon: MediaInsereted() IOCTL failed. Device:1--(Error code:2) The system cannot find the file specified.

Grateful for any advice on how to fix.

Thanks