By some reason, I've got lots of 0 bytes files and some correct wav files:

Unit is 24410E085728D5E5 v. 1.0.0 with firmware 1.8.0

SD card (SanDisk Extreme 64Gb U3 A2 XC V30) is far from beeing full. This is the configuration:

Device ID : 24410E085728D5E5

Firmware : AudioMoth-Firmware-Basic (1.8.0)

Time zone : UTC

Sample rate (Hz) : 96000

Gain : Medium

Sleep duration (s) : 1500

Recording duration (s) : 300

Active recording periods : 1

Recording period 1 : 04:00 - 20:00 (UTC)

Earliest recording time : ---------- --:--:--

Latest recording time : ---------- --:--:--

Filter : -

Trigger type : -

Threshold setting : -

Minimum trigger duration (s) : -

Enable LED : Yes

Enable low-voltage cut-off : Yes

Enable battery level indication : Yes

Always require acoustic chime : No

Use daily folder for WAV files : No

Disable 48Hz DC blocking filter : No

Enable energy saver mode : No

Enable low gain range : No

Enable magnetic switch : No

Enable GPS time setting : No

Any idea on why could this be happening? Are 64Gb SDs not reliable?