Autodesk App Store apps not functioning after installation

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I recently upgraded to AutoCAD 2016 and stumbled across the Autodesk App Store. I found a couple of free utilities, one of which I used previously (but as a lisp routine).
I downloaded the apps and intalled them. If I open the Exchange App Manager it shows the apps as installed and up to date. However, none of the apps are showing up on the Add-ins tab other than what was there when I first intalled CAD (Explore, Exchange App Manager and Import SKP File). I tried to type in the command that is shown on the app's help document but it is saying that it is an uknown command. I also e-mailed the app's creator who said it sounds like an issue with the Autodesk installer for the apps which is created by Autodesk.
I restarted AutoCAD, I rebooted my computer. I have not gone through the steps of reinstalling AutoCAD as it is a lengthly process and I am unsure if it would be beneficial.
Below is a screenshot of the App Manager window showing the apps I installed along with the Add-ins ribbon displayed above. Maybe this will help. Any assistance I can get would be great. Thanks!