I have FF5, opera 1053 and chrome 120742112
Installation of DVR 0815 only worked in chrome. It confirms this in all 3 browsers.http://www.devalvr.com/paginas/galeria/lubliniec.html
2. I am still waiting for xpi-installation. Installation withhout admin. rights.
Hope you are ok. I also have a lot of work. Thanks a lot fiero.