I installed AutoCAD 2014 and was unable to activate the product as the activation window was blank with 2 radio buttons. I have since uninstalled and reinstalled the product several times, following insctuctions from the community support team. I have followed all of the processes on this link http://usa.autodesk.com/adsk/servlet/ps/dl/item?siteID=123112&id=6404339&linkID=9240617 and now have a blank activation window with a scroll bar and no radio buttons (see attached screenshot). I can't even use the product as a trial anymore even though I only installed it last week.
Welcome to the community!
Unfortunately, this is a common issue for some reason. But it is fixable.
For more information on this known Autodesk Support Knowledge Base article, please follow this link:
http://usa.autodesk.com/adsk/servlet/ps/dl/item?siteID=123112&id=6404339&linkID=9240617
Additional discussion about this issue can be found here:
http://forums.autodesk.com/t5/Installation-Licensing/Blank-Activation-Screen/td-p/2862508
Good Luck!