Follow the isntructions in the document and drop the add-in simply on the desktop. Boot the add-in from the desktop and it should be functioning as it did before. I had issues getting it to work. But mine is now functioning perfectly.I got it to work but it seems like a work around. Execute CIM2000.xla and the Add-in is in the ribbon bar and can be executed. Add in does not appear in the standard excel ribbon like all others that you actually download from the store do.
Anyone have a better solution?