been at this for hours
You do not have the appropriate space to handle the full download cycle.
You will need 3x the actual size of the Kontakt download for the 3 phases of installation.
And if it were me - all Content and Downloads should be residing on your D Drive.
Only Application location and the VST locations should be pointing to your C drive for optimum use of the instruments.
AND your VST Locations are all messed up - these should be pointing to standard locations like mine does:
Lots of cleanup to do here before this is going to work right.
VP