timeanddate.com - World Clock Search

5 つ星中 2つの評価を受けています

投稿者: Narutokun - 2月 3, 2010 · 固定リンク

Can't install, get this message:

Firefox could not install the search plugin from "https://addons.mozilla.org/en-US/firefox/downloads/latest/12142/addon-12142-latest.xml?src=addondetail" because an engine with the same name already exists.

why?