[scribus] Render Frames Debugging

[Br. Samuel Springuel]

I'm trying to debug a custom render frame which is based on the LaTeX 
one, but which makes use of LuaLaTeX instead.  The problem is that the 
custom render frame keeps returning the error that it cannot start the 
command and asks me to check the path.  However when I set the LaTeX 
renderer to use the same command (and same path) using the Preferences 
dialog, it works fine (for simple documents lualatex and pdflatex are 
interchangable).  Is there a log somewhere that can provide more 
information as to why the command is failing?

I'm working with Scribus 1.4.6 on macOS 10.13.4.
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Br. Samuel, OSB
St. Anselm’s Abbey
Washington, DC
(R. Padraic Springuel)

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