Acrobat 9 Pro can't print using Adobe Acrobat printer

Dear all,

I am using Surface Pro 3 with Windows 10 Pro (64 bit) and have been using Adobe Acrobat 9 Pro on it for the past 3 years without a hitch.  A few days ago, the printing has stopped and instead of creating a pdf file (from all MS Office programs) a log file is created instead.  From the looks of it, the fonts are not recognised and the job is aborted.  Here is the excerpt from the log file:

%%[ ProductName: Distiller ]%%
Calibri-Bold not found, using Courier.
%%[ Error: invalidfont; OffendingCommand: xshow; ErrorInfo: CharOffsets ¤e 
   )

%%[ Flushing: rest of job (to end-of-file) will be ignored ]%%
%%[ Warning: PostScript error. No PDF file produced. ] %%

I'm sure there is a way to fix this, but can't figure it out.  Any help is appreciated.

Kind regards

M Desai