Have you ran Server Configuration Utility (available in the start menu, in the DM Add-ins folder)? Did all the actions complete
DM add-ins were written for Office 2007. There were no changes for Office 2010 or Office 2013. There are some issues when using DM add-ins with latest versions of Office (e.g.
link). The issue that I reported is so annoying to me that I had to uninstall
If you are looking for alternatives, you can look at the Predixion Insight (link). Predixion cloud service does not require you to have SQL Server
(because it uses Predixion cloud). Predixion Insight is developed by the people who worked on DM add-ins at Microsoft several years ago. It supports latest versions of SQL and Office, integrates with PowerPivot and has many new or improved features (my favorite
are PowerPivot integration, Predixion Workbench and new visualizations).
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