I got the file from Zombie's "Sins of the the Fallen" mod--specifically, from
Sins of the Fallen R5
It's the StarbaseRelicArtifact (in the Artifacts directory of the download) and according to Zombie it's an unused Planet Artifact model included in the original game (I have no idea which one).
I haven't changed anything other than the name for it in the one I posted.
I moved the resize exe to the same folder and get a different error than before but unfortunately, still an error--"Runtime Error 62--Input past end of file".
It creates a resized mesh but it is corrupt and minidumps the game.
I did the "Jolly Roger" from DS which is a larger cap ship model and it works there--sorta--looks like the program times out or hands. Either that ot it's incredibly slow.
All this because I just wanted a scout sized box. No wonder modding in this game drives me bonkers sometimes.
Still no cargo box.