Unhandled exception error

BillQuick Outlook Add-In gives an error on startup: 

“Unhandled exception has occurred in a component in your application. If you click Continue, the application will ignore this error and attempt to continue. Object reference not set to an instance of an object.”

This is a generic error message. You may have originally purchased the Basic edition of BillQuick and then upgraded to the Pro edition. Depending upon the edition of BillQuick you are using, you must have the corresponding edition of BillQuick Outlook Add-In. It is possible that your installation has failed or become corrupt. The simplest solution is to uninstall the BillQuick Outlook Add-In application, download the latest version and reinstall it. Also, make sure you have the correct license keys for it.