Question: maple is giving me Typesetting: -mprintslash .....for every entry in the document

I've tried changing typesetting from extended to standard, but nothing seems to work.  I got myself in some mode I cannot get out of.  I've restarted maple, and even rebooted.
 

restart

interface(typesetting = standard)

interface(typesetting = false)

Error, (in interface) typesetting must be a string of extended or standard

 

eq1 := I1 = v1/xp

Typesetting:-mprintslash([(eq1 := I1 = v1/xp)],[I1 = v1/xp])

 

NULL

NULL

x := 2

Typesetting:-mprintslash([(x := 2)],[2])

 

NULL


 

Download sample.mw

 

here's a snapshot because the uploaded maple document looks  weird:

Please Wait...