My Edge 830 has FW 9.75, the latest mapsets from Garmin Connect manually installed today. Whenever I attempt to navigate to a location, following these direction (https://www8.garmin.com/manuals-apac/webhelp/edge830/EN-SG/GUID-BFBC1CD6-22F5-47D6-8F69-C07FB0D23E9B-3144.html), I get a calculation error message after I select "RIde." This happens every time regardless of whether I'm at the start of my ride or am somewhere else. I select Navigation, then Search, enter the address or POI or city. The map shows the area/location I've searched for, I select Ride. The 830 goes into its calculation mode and I get the error message. This happens 100% of the time. I used "Chat," which was more frustrating that useful. It ended with me uploading my "Garmin" folder from the 830 to Garmin engineering. I'm not even sure if the chat person totally understood my issue.