Getting an error when opening an ArcGIS 10 MXD with ArcGIS 10.1

This is a Microsoft .NET Framework error. This occurs with I try to open an ArcMap 10 MXD using ArcMap 10.1.
The error state that "Unhandled exception has occured in a component in your application...".
Then states, "DragDrop registration did not succeed."

The computer is a Windows 7 (64 bit) with .NET Framework 4 Client Profile & FW 4 Extentded installed on it.
See attachment of installed applications.

I don't have any issues when I open a blank ArcMap & add layers from our SDE 10.0.

Anyone have any ideas?

Attached Files

• DragDrop_Issue.docx‎ (56.3 KB)