[O] OT: taskjuggler question [was: Re: taskjuggler (tj3) export issues and proposals]

[Nick Dokos]

I hope you'll excuse the off-topic noob question: I (think I) installed
tj3.1 per the official instructions. I get

$ tj3 --version
TaskJuggler v3.1.0 - A Project Management Software

I can export the example org file that Christian sent out to a tjp,
process it to Plan.html from the command line and the html file looks OK
afaict, so the basics seem to be in place.  But I have no TaskJugglerUI
executable, which seems to be what the exporter tries to call for
export-and-open (C-c C-e J): what am I missing?

Thanks,
Nick