How to tell BC not to use TM backups

I get exactly the same thing and it's extremely annoying! Garmin, please advise on how we stop this from happening?

I also cannot find any documentation on what BC is doing with the Time Machine backups and why it even needs to access them?

Regards,
Adrian

I'm not sure as I don't have a mac but surely this is a setting in Time machine (which as I understand it is simply an automated backup) rather than an issue for Garmin to resolve?

Just go into Options and set it to exclude Basecamp.

This is not a problem with TimeMachine (or it's options) - the same problem also exists with every additional external (disk) drive (USB-Stick)

Peter

Peter is correct. It's not that T.M. is trying to back up BaseCamp or that BC needs to look at T.M. backup files; it's that BC thinks the mounted T.M. drive is a device it needs to know about.

For me (iMac running 10.9.5), the solution is to leave the T.M. drive mounted on the desktop all the time. BC seems to ignore it, only putting up the dialog box for a drive which mounts while BC is running.

I used to get this irritating nag all the time when I ran T.M. off a NAS and using a sparse bundle -- every time it mounted BC would put up that dialog.

-dan

I'm using a Time Capsule (with sparse bundles because there are multiple users) with Time Machine; BaseCamp never nags about it...

Same problem here. BaseCamp 4.4.7 wants permission to access a network volume mounted by Time Machine during a periodic backup. This has been a problem for about as long as I remember, 1.x or 2.x days. Obviously Garmin developers are above using Time Machine and ever experience this issue. Also don't install MacOS on a case sensitive filesystem, BaseCamp uses at least two different capitalizations of /Volumes/GARMIN and will know your Nuvi is connected but can't read or write and won't complain, just silently fail.

I leave the time machine backup drive mounted and basecamp has never nagged me once.