How to force Firefox to reload all plugins

I need firefox to reload plugin developed and installed by me. I don't want to uninstall and install it again, because it is not very comfortable. I'm sure there has to be way how to force Firefox to reload one or at least all installed plugins besides un/installation procedure. Can anyone help me?
2 answers

FEBE

You can use another extension called FEBE (https://addons.mozilla.org/en-US/firefox/addon/2109) which is for backing up and reloading of all the plugins - really handy when renewing the system

firefox plugin reloading

Firefox can be forced to reload plugin by removing files xpti.dat and compreg.dat from profile directory of profile wherein this plugin is installed.
For example if my profiles are stored in C:\Documents and Settings\your_account\Application Data\Mozilla\Firefox\Profiles and I want to reload plugins in profile dev, then I will find here a profile direcotory with name like k3gh5xtb.dev. In this directory you can find files mentioned above (xpti.dat, compreg.dat). These files you have to delete. That's all.