We recently upgraded to FireFox 31 and now the RM Diagram Editor will not load.  Every time the edit button is selected it prompts to install the RM Browser Plugin even though it has already been installed.  I've read through the troubleshooting guide (https://jazz.net/library/article/1088/#Unable_to_install_RRC_browser_add-on) but to no avail. 

If I down-grade to FireFox 24 or 17, its works like it is suppose to, it is just FireFox 31 (.0, .1 and .2).  We have 2 environments, a 4.0.7 and a 5.0.2, and the behavior is the same on both.   I've checked and it seems to be installed correctly, but for some reason FF 31 doesn't recognize that the plugin is installed. 

Has anyone else experienced this or know what a potential fix is?

Thanks in advance,

Rob