Hi Doug,
You can get it here:
http://mindfusion.eu/_samples/ReferenceUpdater.zipIt has an option to check-out projects from SourceSafe before updating and references some COM interop assembly for that; we are not sure what happens if you don't have SourceSafe installed.
The tool only updates the project reference properties - the same ones you can see in the VS property window when you select a reference. It can update any reference, not only Mindfusion's ones. For this we have some project files which you can open from File/Open, which describe the assembly properties to be set in the VS project. You can find one such file in the zip archive which we use to update the flowchart.net samples.
To try out how the application works, start ReferenceUpdater.exe and open the Diagramming.rup file. The VS projects that will be updated are specified in the Directory text box. You will need to enter your local directory containing the target VS projects in this text box. Click the enumerate button to list all VS projects in the specified directory in the projects list. You will need to manually modify the update rules below to update the assemblies of interest. Between the % character enter the full path to the assembly on your system. The tool uses it to read the version number in case you select the "Use specific version" property. You might also have to modify the HintPath of each reference. Once this is done, select Update -> Go to update all the projects in the specified directory.
We have never run this on anything different than our sample projects, so it's probably a good idea to backup your projects before running the tool

Stoyan