Summary
The Edit Button in the Properties pane for a Script activity may not load the Script Editor Window after you upgrade an existing 64-bit version of Workflow 8.0.0 to 8.0.1.
Cause
The 64-bit version of the Workflow Suite 8.0.0 installation package incorrectly creates duplicate copies of several files in the Workflow installation folder when they should only exist in the Windows Global Assembly Cache (GAC). When upgrading to version 8.0.1, the Workflow 8.0.1 installation does not properly account for these duplicate copies.
Resolution
Do the following