The Excel Add-in for Trackpal should automatically update itself. However, if you are having any problems, you can try the following to resolve the issue:
Click the Get Latest Update button on the toolbar. This will force the latest version to be installed.
Login and Setup Trackpal Account
Try re-running the Login and Setup Trackpal Account.
This method is useful as it forces an update of the Trackpal menu items
If you still continue to have problems, try uninstalling and re-installing Trackpal via Add/Remove Programs.