I can see from the forums on Garmin’s website that this has been an issue since at least June 30, 2012.
I’ve opened up a support ticket with them that reads as follows:
Trying to send addresses to Garmin Nuvi from google maps via Chrome. Using latest Garmin plugin (it forced me to upgrade from V3.x to V4.x). On the following garmin page:
I receive this error:
An HTTP 404 Error has occurred.The page you requested does not exist.
I see from the forums that this has been an issue since at least June 30, 2012.
Can you please direct this issue to the team responsible? There were no reasonable choices on the Garmin support web site and it made me select *something* so I selected this category.