One of my science blogs has stopped loading (phone and tablet). I observe the stacktrace listed below, but the interesting message is: E/GeckoConsole( 7342): [JavaScript Error: "Error: Failed to load script (nsresult = 0x80004005)"] After bisecting, the first bad changset I observe is: chgset: 250252:66ea7374c23d Which includes module dom/workers/ScriptLoader.cpp, and seems suspiciously relevant. Going to drop a note on: Bug 1169044 - Patch 3 - Store and set principal with script URI on ServiceWorkers. D/GeckoTabs( 7342): handleMessage: Content:StateChange D/GeckoToolbar( 7342): onTabChanged: START I/GeckoToolbarDisplayLayout( 7342): zerdatime 291948822 - Throbber start D/GeckoBrowserApp( 7342): BrowserApp.onTabChanged: 1: START D/GeckoTabs( 7342): handleMessage: Content:LocationChange D/GeckoTabs( 7342): handleMessage: Content:SecurityChange D/GeckoToolbar( 7342): onTabChanged: TITLE D/GeckoBrowserApp( 7342): BrowserApp.onTabChanged: 1: TITLE V/GeckoProfile( 7342): Fetching profile: '', 'null' D/GeckoToolbar( 7342): onTabChanged: LOCATION_CHANGE D/GeckoToolbarDisplayLayout( 7342): updateFavicon(null) D/GeckoBrowserApp( 7342): BrowserApp.onTabChanged: 1: LOCATION_CHANGE D/GeckoToolbar( 7342): onTabChanged: MENU_UPDATED D/GeckoBrowserApp( 7342): BrowserApp.onTabChanged: 1: MENU_UPDATED D/GeckoToolbar( 7342): onTabChanged: SECURITY_CHANGE D/GeckoBrowserApp( 7342): BrowserApp.onTabChanged: 1: SECURITY_CHANGE D/GeckoToolbar( 7342): onTabChanged: MENU_UPDATED D/GeckoBrowserApp( 7342): BrowserApp.onTabChanged: 1: MENU_UPDATED D/GeckoTabs( 7342): handleMessage: Tab:ViewportMetadata D/GeckoTabs( 7342): handleMessage: DOMTitleChanged D/GeckoTabs( 7342): handleMessage: Link:Feed D/GeckoToolbar( 7342): onTabChanged: VIEWPORT_CHANGE D/GeckoBrowserApp( 7342): BrowserApp.onTabChanged: 1: VIEWPORT_CHANGE D/GeckoToolbar( 7342): onTabChanged: TITLE D/GeckoBrowserApp( 7342): BrowserApp.onTabChanged: 1: TITLE D/GeckoToolbar( 7342): onTabChanged: LINK_FEED D/GeckoBrowserApp( 7342): BrowserApp.onTabChanged: 1: LINK_FEED E/GeckoConsole( 7342): [JavaScript Error: "Error: Failed to load script (nsresult = 0x80004005)"] V/GeckoProfile( 7342): Fetching profile: '', 'null' D/GeckoHealthRec( 7342): Recording session end: P V/GeckoHealthRec( 7342): Recorded session entry for env 8, current is 8 D/GeckoSessInfo( 7342): Recording session done: 1435827708397 D/GeckoBrowserProvider( 7342): Expiring history. D/GeckoBrowserProvider( 7342): Expiring thumbnails. I/GeckoHealth( 7342): fennec :: HealthReportBroadcastService :: Registering HealthReportPruneService. I/GeckoHealth( 7342): fennec :: BackgroundService :: Setting inexact repeating alarm for interval 86400000

dupe of Bug 1178508?

Unfortunately, rebuilding with the attached patch doesn't solve the issue.

Fix should land soon. In the meantime you can use about:serviceworkers to remove the registration for medium and try again.

Oh, I missed that you said you tried with the patch from bug 1178508.

It's unclear to me if the registration could get itself into a wedged state if it deadlocked as in bug 1178508. You may need to clear the registration using about:serviceworkers. Of course, it seems medium.com has now removed their service worker completely. So it may be difficult to continue to test this.

(In reply to Ben Kelly [:bkelly] from comment #5) > Of course, it seems medium.com has now removed their service worker > completely. So it may be difficult to continue to test this. Ignore this please. The SW script is still loading. My nightly instance seems to be in a bad state, though, and its not getting registered there for some reason.

Ok, I agree it's a dup of bug 1178508 \o/ After applying the patch, I had to clear the ServiceWorker by Settings -> Privacy -> Clear now ... and with all listitems checked ... -> Clear data It works fine again after that. I suspect I might have been able to clear a subset of the Privacy settings, or just done a complete uninstall/reinstall, but *shrugs*