You are a gentleman and a scholar.
Now if only Dassault can solve these persistent annoying errors...
the reaseon why floor options are greyed out are:
Floor reflections - only active if RealView is turned on (which meand you need Quadro graphic card or do some changes - like I did - in SW registry and then GTX will be able to turn RealView)
Floor shadows - only active when you have Shadows In Shaded Mode active.