I have a similar problem since the update. I am a Windows Desktop user and at the moment files are not syncing at all. On all my computers, I am getting the following message:
„Multiple Accounts are sharing the folder d:\owncloud. This configuration is known to lead to dataloss and is no longer supported. Please consider removing this folder from the account and adding it again.”
However, I did not share this folder, this is the local folder on 3 PCs. In the web client this folder is also not shared.
I already deleted the .sync files as well as owncloudsync.log. I also did a reinstall on all PCs and changed the folder. Nothing happened.
I have not access to the server side of the cloud.
Have the same problem as Kai.
In addition, my Windows Explorer behaves very sluggish or does not load the file structure at all. Especially in the OwnCloud folders. When I quit the OwnCloud client, Windows Explorer works without problems.
After a rollback to 2.8.2 I have no problems at all.
I’m having the same issue. I’ve tried deleting .owncloudsync.log from the root folder and also .owncloudsync.log from the Dropbox folder that I’m trying to add (it used be a synced folder but I removed it after getting the error message). But I’m still getting the error when trying to add the sync.
I also have these hidden files in the root folder:
So I deleted them anyway and you’re right, it just had to rebuild the selected/deselected folders. No big deal, just a bit of time to sort. However, problem still persists, I still get the error message when I pick a folder “The folder XXXXX is used in a folder sync connection! Please pick another one!”