don't khold your breath waiting for an answer.
and I never usae auto trim, I just do it by hand...less mistakes
p.s.
if you haven't done so,
change your working folder location..or rename it to a different partition
under;
file
wavepad options;
audio processing;
audio working folder;
clik that button, then name your own folder and partition C: or D:
I only say do that because it's possible that the cause of the anomalie, is a corrupted default folder
mine was, I did as shown above, and now all is well.
goodluck