Where is the file Yaml_Lib.pm?

Most likely, your program sets @INC in some way and App::FatPack / fatpack fails to pick that up.

Maybe look at the output of fatpack trace urs.pl and/or the contents of fatpacker.trace to find the error.

In reply to Re: fatpack : Packlists error even though module present in fatpacker.trace by Corion
in thread fatpack : Packlists error even though module present in fatpacker.trace by t-rex

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