Can't Install on Firefox 8.0 Bewertet mit 1 von 5 Sternen

It says that it's compatible with firefox 8.0 but when I try to install it it says it's not compatible with Firefox 8.0 what the heck?

Diese Bewertung wurde für eine vorherige Version des Add-ons (0.9.87.1-signed) abgegeben. 

That is not a ChatZilla problem, it's a Firefox/addons.mozilla.org problem! In this case, addons.mozilla.org has been having uptime issues the past two days and this can prevent Firefox getting the compatibility information correctly.