On one specific folder I get this error in famtd.log:
drive [XTCOM]: ERROR:CIFSOperations::ListAll: SMBC_Getxattr: failed: 2
Client computer is Windows 8. The name of the folder is Bilder.

I have checked the permissions and the proxy user has full permission on
the master folder:
The folder is located directly under user:

I renamed the folder to Bilder.old, created a new one with the same name
(Bilder) and copied the files into the new folder.
Same error.
Other folders are syncing without problems.