Could not download and install Guides and Sample Code. An unexpected error occurred while moving files to the final destination.
Xcode 8 beta 4 won't download "Guides and Sample Code"
Same occurrs here even after several retries, logout and reboots!
Saw this as well. Was able to work around it by manually navigating to ~/Library/Developer/Shared/Documentation/DocSets/ and removing "com.apple.adc.documentation.docset" left by previous install, then restarting the install.
This did not work for me with Xcode 8.2. I did see the following log message:
Dec 13 09:35:07 magrathea com.apple.xpc.launchd[1] (com.apple.xpc.launchd.domain.pid.IDECacheDeleteAppExtension.14214): Path not allowed in target domain: type = uid, path = /Applications/Xcode.app/Contents/Developer/Library/PrivateFrameworks/CoreSimulator.framework/Versions/A/XPCServices/com.apple.CoreSimulator.CoreSimulatorService.xpc error = 1: Operation not permitted, origin = /Applications/Xcode.app/Contents/PlugIns/IDECacheDeleteAppExtension.appex
Dec 13 09:35:07 magrathea com.apple.xpc.launchd[1] (com.apple.xpc.launchd.domain.pid.IDECacheDeleteAppExtension.14214): Path not allowed in target domain: type = pid, path = /Applications/Xcode.app/Contents/SharedFrameworks/LLDB.framework/Versions/A/XPCServices/RootDebuggingXPCService.xpc error = 147: The specified service did not ship in the requestor's bundle, origin = /Applications/Xcode.app/Contents/PlugIns/IDECacheDeleteAppExtension.appex
Dec 13 09:35:08 magrathea com.apple.xpc.launchd[1] (com.apple.xpc.launchd.domain.pid.IDECacheDeleteAppExtension.14214): Path not allowed in target domain: type = pid, path = /Applications/Xcode.app/Contents/Frameworks/DFRSupportKit.framework/Versions/A/XPCServices/IDETouchBarSimulatorService.xpc error = 147: The specified service did not ship in the requestor's bundle, origin = /Applications/Xcode.app/Contents/PlugIns/IDECacheDeleteAppExtension.appex
Dec 13 09:35:08 magrathea logd[72]: _handle_cache_delete_with_urgency(0x7fceb8034e20, 3, 0)
Dec 13 09:35:13 magrathea logd[72]: _handle_cache_delete_with_urgency(0x7fceb8038370, 3, 0)
Dec 13 09:35:13 magrathea logd[72]: _handle_cache_delete_with_urgency(0x7fceb8137df0, 3, 0)
Dec 13 09:35:13 magrathea logd[72]: _handle_cache_delete_with_urgency(0x7fceb6c1c560, 3, 0)
Dec 13 09:35:13 magrathea logd[72]: _handle_cache_delete_with_urgency(0x7fceb83374a0, 3, 0)
Dec 13 09:35:13 magrathea logd[72]: _volume_contains_cached_data(is /private/var/db/diagnostics/ in /) - YES
Dec 13 09:35:14 magrathea logd[72]: 86066512 bytes of purgeable space from log files
Dec 13 09:35:14 magrathea logd[72]: _purge_uuidtext only runs at urgency 0 (3)
Dec 13 09:35:14 magrathea logd[72]: 0 bytes of purgeable space from uuidtext files