Framework Error

#1
Alright so when I used to startup this framework error appeared:
Invalid root in registry key
"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\win64dll".

Someone here mentioned to just go in and delete the win64dll so I did and don't get the error BUT I cannot run a specific autodesk program and autodesk said that it is a javascript error of some sort, and I am guessing it has to do with this error somehow.
The error mentioned above also comes back after a while after deleting.

Is there a program or method to fix all of this?
I have tried free programs but none have worked.
Or should I just do a clean install and be done with it?

Thanks

EDIT: here is the link to the autodesk error I am getting:
http://usa.autodesk.com/adsk/servlet/ps/dl/item?siteID=123112&id=6404339&linkID=9240617
 


This website is not affiliated, owned, or endorsed by Microsoft Corporation. It is a member of the Microsoft Partner Program.