Dear Mojca,

As you told me, I changed "outputdriver" in tex.rb from xdvipdfmx to xdv2pdf and run it.

There is no delay at all, but the output pdf lost color and mp stuffs.

I think that it is better to use xdvipdfmx even though it took more times.

During the test, I found a strange result. Here is the last part of the log file.

%%%%%%%%%%%

systems : no file 'cont-sys.tex', using 'cont-sys.rme' instead

) )

[7][8][9] <--- at this point, TeXniscope redisplay the pdf file in which backgroundscreen or backgroundcolor is well applied

81117 bytes written

Output written on combimain.pdf (9 pages).

Transcript written on combimain.log.

TeXUtil | parsing file combimain.tui

TeXUtil | shortcuts : 169

TeXUtil | expansions: 308

TeXUtil | reductions: 0

TeXUtil | divisions : 0

TeXUtil | loaded files: 1

TeXUtil | temporary files: 0

TeXUtil | commands: 42

TeXUtil | programs: 0

TeXUtil | tuo file saved

At this point, it paused for long time

** NOTICE: This document contains a `Preview & Print only' licensed font **

TeXExec | runtime: 144.462654

At this point, TeXniscope redisplay the output again and in which backgroundscreen and backgroundcolor didn't work.

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Do you have experienced the similar thing?

Thank you.

Best regards,

Dalyoung