I have set a style for my Maple 2023 sheets

2D-Input, Font: Times Roman 28 pt.

In the the past when I reopened the file, it would come back with the same 2D input font.

Starting today, when I reopen the file, the whole sheet is changed to. 

Maple-Input, Font: Courier New 12 pt. 

You can see it flash on the original stylem then reset to the Courier font. 

I tried resetting the Display options, but no luck.

Any thoughts?

I tried to open some existing worksheets. 

If I enter, e.g.,r f:=x, I get 

"Typesetting:-mprintslash([(f := x)],[x])"

I cannot change the style set. 

It seems that when I open old worksheets, some of the text imput, e.g., processes, is lost.

I upgraded to Maple 2025, but have the same issues. 

Any suggestions?