Garageband looking for unconnected network drive

When I take my laptop away from my home network and open Garageband, it takes a long time to open and then gives an error message saying that it cannot find a NAS drive (that is installed in my home network).

If I hit OK, then I can use Garageband, but if I try to use Share, or even if I just mouse over the Share menu item, the application gives me the spinning beach ball and eventually pops up the message again that it cannot find the network drive. It's pretty much impossible to export the song because when I click to dismiss the popup message, the Share menu dropdown also disappears.

I don't know why Garageband is looking for the network drive. I've tried trashing preferences and restarting; I've even uninstalled Garageband and reinstalled it (when I was not at home).

Obviously, when I'm at home and can access the network drive, this doesn't happen. But it's very inconvenient when I'm recording somewhere else.

It's something to do with my user, because if I log in using a different account, the behavior doesn't occur.

Help?

Garageband 10.1.0