Hello, Here is my problem, I do not know why but the extension mkiosk disappeared extensions of firefox: /, she had recently had an update. The problem is that I realized an application and a project of end of study which uses this mod on a tablet. It turns perfectly. Little parenthesis I do not understand the reason for the withdrawal. The problem is that I have to return my work of end of study in 1 week, and that I must be able to distribute this extension to my teachers so that it can try my project. Is there a module that would allow me to get the module installed and that I can distribute it from an external source. Thanks in advance in urgency 
Hi @scwall, it looks like mkiosk is incompatible with currently supported versions of Firefox.
Would Modern Kiosk work as a suitable replacement?
Hello, i have found a solution. ( the users in mozzilla-fr irc users helped me, ) I have shared the extensions of my navigator in github,
Thank you, good evening: D