Office 2007 pias and Office 2010

I have a client who is using our plugin with their Outlook 2007 install. They recently installed Visio 2010 on their systems. The Office 2010 updates that are coming down from Microsoft are causing out plugin to crash in Outlook 2007 because our pias are not being recognized or overridden. Has anyone else ran into this problem? And if so what is the best way to handle this scenario.

Thanks