Corrupt show files, size 0 dB

A couple of times now, when I’ve tried to load a show file from the console file system (not an attached USB) I’ve gotten a message that the show file is corrupted, and when I select “info” to look at it the size of the file is 0 kB.

Fortunately I’m in the habit of backing up show files to the USB drive that lives in the console on a regular basis, so as yet it hasn’t cost me a whole lot of time.

Still, I’d like to know if there’s anything I can do to avoid having it happen. Anyone else seen this?
GLD-80, running v1.51 firmware.

I have also experienced this on my GLD-80 with the following spec:

Firmware: 1.50 rev 18502
Surface: 1.1
DSP: 1.3
Moro fader: 1.1
OS: 3.01

I was going to update after my next show. A regularly used show file comes up as corrupt and 0KB.

Any information on this issue?