services added as proxy items to AGOL; credentials NOT stored in service item
AGOL hosted feature service for location tracking
webmap is downloaded to Collector; used in offline mode
related tables are edited in the field
Wifi sync, Collector routinely displays: "Sync Error: File opened that is not a database file"
Good part is that the data appears to sync OK when looking at the source SDE geodatabase.
This seems to only happen using the latest iOS hardware/software.
Older iPad2 with Collector 10.3.5 does not display the error that I'm aware of.
Anyone else have this problem, any workarounds?