As regards the PrintableCalWord.vsto issue does it happen each time Word loads or just that first time? If it only happened once then there is no problem.

It seems that something is/was trying to install a PUP because VueSoft should not try to install in the first place. See About VueSoft - Creators of the Best Calendar Program for Windows and PrintableCal . A PUP is a 'Potentially Unwanted Program' and not necessarily harmful. Just unwanted and unneccessary. In this case it is simply a printable calendar and not part of Office. It is not installed on my system.

It is good that the installation failed but not good that it tried to install in the first place. Try running a virus scan. These look for PUPs as well as viruses.

Good luck.