STR: 1. Use the App Manager to connect a non-OOP app, like System 2. Go to the Inspector tab 3. It is blank 4. You have the following error in the Browser Console: this.conn.allocID is not a function Pool<.manage@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/server/protocol.js:689 exports.InspectorFront<.initialize@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/server/actors/inspector.js:2245 constructor@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/commonjs/sdk/core/heritage.js:145 TabTarget.prototype.inspector@resource://gre/modules/commonjs/toolkit/loader.js -> resource:///modules/devtools/framework/target.js:263 InspectorPanel.prototype._getWalker@resource://gre/modules/commonjs/toolkit/loader.js -> resource:///modules/devtools/inspector/inspector-panel.js:150 InspectorPanel_open/<@resource://gre/modules/commonjs/toolkit/loader.js -> resource:///modules/devtools/inspector/inspector-panel.js:49 resolve@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/commonjs/sdk/core/promise.js:118 then@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/commonjs/sdk/core/promise.js:43 then@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/commonjs/sdk/core/promise.js:153 InspectorPanel_open@resource://gre/modules/commonjs/toolkit/loader.js -> resource:///modules/devtools/inspector/inspector-panel.js:48 Tools.inspector.build@resource://gre/modules/commonjs/toolkit/loader.js -> resource:///modules/devtools/main.js:113 TBOX_loadTool/onLoad@resource://gre/modules/commonjs/toolkit/loader.js -> resource:///modules/devtools/framework/toolbox.js:518

The style editor either.

Might be related: bug 915444

I tried out the patch from bug 915444 on B2G, but that didn't appear to resolve the issue for me.

The exceptiong really didn't help figuring out this simple issue... We weren't loading inspector actor in the parent process, so that any app being debugged in parent process wasn't having the inspector tab actor instanciated.

Comment on attachment 805382 [details] [diff] [review] Enable inspector actor in b2g parent process r=paul It also fix the inspector in the simulator as all apps are still in parent process.

Comment on attachment 805382 [details] [diff] [review] Enable inspector actor in b2g parent process r=paul [Approval Request Comment] Bug caused by (feature/regressing bug #): new feature (app manager) User impact if declined: Not possible to use the inspector with some Firefox OS apps Testing completed (on m-c, etc.): on m-c Risk to taking this patch (and alternatives if risky): low String or IDL/UUID changes made by this patch: no

I am unable to reproduce the initial issue. Can you please verify that this is fixed on latest Aurora and latest Nightly?

Yes, it is fixed in the latest Aurora and Nightly.

Thanks Ryan.