Amichai Rotman wrote: > I know it's obvious - but - did you restart Thunderbird after install? Well, he did state that he restarted Thunderbird, so I'd have to take his word for it. Also, what Paul suspected is unlikely, as one does not need to be root to install the Calendar extension. Extensions are installed in the user's home directory, so they do not require root privilege. In fact, I installed it on my own system, without being root. So, I guess that pretty much narrows down the reasons why Peter isn't seeing any extensions.