ACT Add-in to Microsoft Outlook 2010 - intermittently causing Outlook to close - sometimes works, other times crashes!

[agritravlr]

I have ACT by Sage 2009. When using Outlook 2010, and wanting to add an e-mail contact to my ACT database using the Add-in feature of Outlook, sometimes it works, other times it crashes Outlook. I have to reboot/restart Outlook for the feature to work again.

Any ideas why this happens or what to do about it?

Richard