Hello,
Sorry to hear you are having issues. But, need to know more details on your issue with ShadowFX?
Seems there is some kind of problem installing it fresh.
Please elaborate on this. I don't use ShadowFX since I am Windowblinds or Curtains most of the time and both of this programs have its own shadow engine. But, I tested ShadowFX on my other system and it installed and run without issue for me.
Basj,
Stardock Community Assistant.