This problem can manifest itself in a variety of ways, including but not limited to an error message that says
"You are not authorized to use this object. Set AuthKey property first."
Solution:Try disabling the other add-ins to see if the Sperry Software add-in works properly. The programmers at Sperry Software work with the vendors of other add-ins to be sure that all add-ins get along properly. You can disable other third party add-ins by going to (in Outlook) Tools...Options...Other...Advanced Options...COM Add-Ins. Find any other add-ins and uncheck them. It is usually not necessary to remove them. If you do, you will need to install them again. After removing the other add-in(s), try to reproduce the problem. If the problem goes away, please file a bug report indicating that the add-in worked when you disabled the other add-in. Sperry Software will help you to get the problem resolved with the other vendors if necessary.
Comments:
This problem is frequently related to the add-ins sharing DLL files.