Acrobat 9 cannot create document

My acrobat can no longer make a pdf file.

See error below

Have changed settings in Distiller to ensure it is pointing to font files  SEE Error below

Anyone have any ideas?

Thanks

Colin

%%[ ProductName: Distiller ]%%
Calibri not found, using Courier.
%%[ Error: invalidfont; OffendingCommand: xshow ]%%

Stack:
-dict-
-file-

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