From the first pop-up, it seems like somehow tcl is probably running:
libreoffice /mnt/Data/Dropbox/Data/APPS/Ledger/'macro:///Stardard.Module1.ToPDFWithFont(/mnt/Data/Dropbox/Data...
and treating the comma separated 'macro://string, 10' as an array it needs to append to the base path…
Maybe try making sure your Tcl is quoting the path with "? Otherwise, I think this has become more of a Tcl debugging question and you should start a new thread.
P.S.
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