timeanddate.com - World Clock Search

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由 Narutokun 发表于 Feb. 3, 2010 · 永久链接

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?