A family of Microsoft relational database management systems designed for ease of use.
I had this exact problem to the letter. I was able to fix this by deleting 1.8 leaving only 1.9 in the following registry: HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib{00020802-0000-0000-C000-000000000046}
I believe this is left from the automatic upgrade from office 2013 to office 2016. graphs now work perfectly. hope this helps!
Regards
Tom