Now I’ve tried multiple things.
The version 3.1.2 always works but there my barcode is always printer from bottom-to-top
The prerelease versions (32/64) sometimes work (most of the time they don’t.
Sometimes with no message (and no print), sometimes with msg crash, sometimes the process keeps hanging (saw that in the task manager), also had some other situations/messages
So I guess that the prerelease is surrely not stable enough.
That brings me back to the official release 3.1.2.
What can I try there to make the print work fine (print from left-to-right) because there I can’t set the landscape
Also, is it possible that suddenly I do get a splash-screen when using "SumatraPDFPortable.exe -print-to “TEC B-EV4 (203 dpi)” c:\tmp\myticket.pdf
As far as I remember I didn’t had that splash-screen in the past (I can be wrong!, if I’m wrong can I prevent that from showing)