I have my settings folder synced on dropbox by using these instructions: https://packagecontrol.io/docs/syncing#dropbox
I tried updating from 3143 to 3170 today, and it seems to ignore my settings. Weirder, if I do Preferences > Browse Packages, nothing happens - no folder window pops up.
If I rename that symlink, then Preferences > Browse Packages will work, but of course then my settings are still gone.
I downgraded to 3143 and it still works fine, so… not sure where to go from here.