VitalSource Bookshelf 6.1.2 -- can't install

My version is 6.0.1 on windows 7. Everytime I started it I am prompted to update to 6.1.2. However, it never installed and would say the VitalSource Bookshelf.msi invalid.

This application sucks. No support at all. Why CFAI chose to use this crap? Highlighing sicks, note sucks. Color sucks. Many PDF applications are way better than it.