DebuggerServer.ObjectActorPreviewers is undefined

[janodvarko]

STR:

1. Install FireQuery
2. Restart Firefox
3. Open Add-on Manager
4. Disable and enable, see the error console

There is an error: FireQuery: DebuggerServer.ObjectActorPreviewers is undefined

This comes from firequery-actor.js, from the attach() method

Honza