If you connect to Fennec via remote debugging and choose "Main Process", you get the following error (this is from adb logcat, but it also appears in the console itself): E/GeckoConsole(24721): [JavaScript Error: "error occurred while processing 'startListeners: Module `devtools/toolkit/webconsole/network-monitor` is not found at resource://gre/modules/devtools/toolkit/webconsole/network-monitor.js E/GeckoConsole(24721): Stack: @resource://gre/modules/devtools/server/actors/webconsole.js:20:3 E/GeckoConsole(24721): XPCU_defineLazyGetter/<.get@resource://gre/modules/XPCOMUtils.jsm:177:9 E/GeckoConsole(24721): WCA_onStartListeners@resource://gre/modules/devtools/server/actors/webconsole.js:542:15 E/GeckoConsole(24721): DSC_onPacket@resource://gre/modules/devtools/server/main.js:1155:9 E/GeckoConsole(24721): DT__processIncoming/<@resource://gre/modules/devtools/server/transport.js:201:9 E/GeckoConsole(24721): makeInfallible/<@resource://gre/modules/devtools/DevToolsUtils.js:82:7 E/GeckoConsole(24721): Line: 20, column: 0" {file: "resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/server/main.js" line: 1056}]

Also, try to avoid the "Debugger" tab for the moment, since that will crash Fennec (see bug 982675).

Sounds like a bug with the devtools loader setup. require() fails on fennec.

(In reply to Mihai Sucan [:msucan] from comment #2) > Sounds like a bug with the devtools loader setup. require() fails on fennec. You're right, I've seen a similar error for the Style Editor too. I just tried to find a regression window, but all the builds were good... I must not have the right STR yet. :/

Huh, can't figure out how to reproduce anymore. Mihai, it seems you also saw this according to comment 2? Were you using an official nightly or a local build of Fennec? Perhaps it's been resolved as well...

(In reply to J. Ryan Stinnett [:jryans] from comment #4) > Huh, can't figure out how to reproduce anymore. Mihai, it seems you also > saw this according to comment 2? Were you using an official nightly or a > local build of Fennec? That comment was only based on the error you pasted. I didnt test.

Well, I can't seem to make this happen anymore. Will reopen if I see it again.