OK - the "outofDatePluginException" is what I was looking for.
First of all, you need to know that you do NOT have to register the unit right away to have it operate. About all that is needed is that you allow it to charge up and then let the unit find the satellite signals so that it can find its location, and plot it on the map. Registration can happen at almost any time after it is purchased, and the initial screen message you saw was simply an "encouragement" to get you to register.
OK - with all that said, the "out of date' plugin message should be able to be "fixed" by visiting the page I have linked below. This is the Garmin Communicator Plugin "test page" that will show if the plugin is up to date (or not). You should also have the chance to update the plugin on that page by simply clicking a link that appears.
What you should see is the version number of the plugin, and a green circle with a "check mark" inside - if the plugin is up to date. Garmin Communicator Plugin <-- Click Here
I just checked my plugin on that page, and it says version 188.8.131.52, but it also says that it needs to be updated. I am using the Firefox browser, so you may get something different. But again, what you are looking for is a green circle with a check mark, and a message that says your plugin is current.
By the way, you do NOT have to plug the unit into the computer to test (or update) the plugin. Just visit that page and let me know what you see and if you can get the updated version. If so, then try to register your unit again - AFTER you see that green circle.
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Thanks, XXXXX XXXXX