I started to do that before I came here. I had zero mods and everything works fine. I put in one mod - Side Panels by Roslich - and it failed. I went back out and removed that and put in Custom Shells, Smoke, Info Panel, Ping-O-Meter, Score Timer - Failed again.
I uninstalled mods using Windows system. I will try once again to download and start a new.
*FIXED* - Seems either Malware Bites or McAfee was stopping something. I uninstalled McAfee adn turned off Malware Bites, and.... TADA