[Gretl-devel] --makepkg option silently failing?

Hi, I'm sure I did something stupid but here's the thing that puzzles me: Trying to build a function package on Windows via the CLI command "gretlcli.exe --makepkg <filename.inp>" doesn't produce the wanted gfn output, but also doesn't complain. It just silently returns control to the shell. Am I right to assume that one of the two things (success or error) should happen? Starting gretlcli.exe by itself works alright. The path location is not unusual AFAICT. This was with 2020e, then I installed the latest snapshot. I'm not sure I have ever built a package since 2020e came out. I haven't tried restarting the computer yet. thanks sven