[scribus] Red squares when loading texts

[Rolf-Werner Eilert]

Hi all,

this is strange: We have used Scribus for many years on our school's 
server (terminal server) without any problems. My own Scribus runs 
flawlessly.

So does one Scribus for one of the new students, but for all the others, 
there are only red squares when they import a text into a text frame. 
Even built-in text doesn't appear correctly. Only when they switch to 
Courier New, the text is shown.

Seems to be a thing with fonts... But where should I start to look?

Thanks for your input.

Rolf