A Division of Windham Capital Management, LLC

NDde Does Not Match The Assembly Reference

NDDe exception message when starting the Windham Software

The located assembly’s manifest definition with name ‘NDde’ does not match the assembly reference.

This is most likely due to an incorrect version of the NDde.dll file that is required by the Windham Software. The Windham Software requires NDde.dll version 1.0.3968.21861.

Verifying NDde.dll Version Number

  1. Navigate to the Windham Software installed location (folder). The default install location is typically C:\Program Files\Windham Capital Management, LLC\WPA
  2. Locate NDde.dll in the install folder, you may need to turn on “View Hidden / System Files”
  3. Right-click on the file and view “Properties”.
  4. Select the “Version” tab and verify that that it is 1.0.3968.21861


  1. Download and unzip the correct version of NDde.dll to the Windham Software installed location
  2. Restart the Windham Software

Category:Installation & Upgrading
Category:Common Error Messages