When downloading a basemap through a portal for Arcgis for Collector 10.3.4 for use on an IOS 9.0.2 device the file appears to partly down load then returns an error unable to download map "File open that is not a database file" These files download sucsessfully on an Android device. Using IOS 8.3 and 8.1 downloading these same files gave a Map Download Failed NSURLErrorDomain error -1013 and issue suspected to be an authorisation problem but which was not resolved.
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