Drupal for Firebug does not work in FF> Works fine in Chrome I have downloaded and installed Drupal for firebug Module and FF and Chrome extensions.

I log in as admin (uid 1) and do a simple output call: 

firep("this is some message", "Message Title");


On chrome I can see the output fine, but in firefox I get the following message: 


  No Drupal for Firebug data was found.


Either this site is not running Drupal or the Drupal for Firebug module has not been installed/enabled.
There are some issues with the Drupal for Firebug plugin depending on which version of Firefox/Firebug/DrupalForFirebug you are running.  See the following issue on DO Extension breaks with version 14 of Firefox

It works for me on:

Firefox - 18.0.2
Firebug - 1.11.2
Drupal for Firebug Module - 7.x-1.4
Drupal for Firebug Firefox Plugin - 2.2