Thread:Extension talk:Scribunto/Error reading from pipe?/reply (2)

SOLVED! After countless attempts of trying this and that, the problem was solved by:

1) Using a somehow larger lua 2.1.5 linux64 binary I found at the luabinaries sourceforge, and then, 2) Running MediaWiki's purge action.

I leave this information here, in hopes that other people may find it useful.