In Trunk, when trying to reproduce bug #977919, this error sometimes happens: E/GeckoConsole( 626): [JavaScript Error: "Handler function DebuggerProgressListener.prototype.onStateChange threw an exception: [Exception... "Component returned failure code: 0x8000ffff (NS_ERROR_UNEXPECTED) [nsIPrefBranch.getBoolPref]" nsresult: "0x8000ffff (NS_ERROR_UNEXPECTED)" location: "JS frame :: resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/event-emitter.js :: EventEmitter.prototype.logEvent :: line 144" data: no]Line: 144, column: 0" {file: "resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/DevToolsUtils.js" line: 56}] The faulty line seems to be /modules/devtools/event-emitter.js:144: let logging = Services.prefs.getBoolPref("devtools.dump.emit");

Comment on attachment 8389894 [details] [diff] [review] Move the "devtools.dump.emit" pref from firefox.js to all.js. r=ochameau Review of attachment 8389894 [details] [diff] [review]: ----------------------------------------------------------------- Yes, that's it.

Back luck between bugs 974056 and 976679...