I have an audiomoth device which is recording "empty" files. I am working in the custom mode with amplitude triggering. After expanding the T.WAV files it seems that the recording is working fine, but the files expanded are all empty, no noise or bats had been recorded. The filelength is variable from some ms to 5 sek. So I think, that the trigger is working correctly, but no data is written to the SD Card. I have 9 more Moths with the same settings which are working fine.