GPG Error Code 2

Question

GPG is always returning 2 at the result. My code is as follows

$cmd = \"/usr/bin/gpg -a --recipient $to -e -o $outfile $infile\";

Where outfile

Answer 1

You also might want to concider adding key to trusted keys list:

gpg.exe --edit-key KEY_NAME
trust
5 (level of trust)
Y
Save

I've had some problems of --always-trust parameter not functioning properly on XP windows, this helped me solve the problem.