Why are the plugins delivered as a install package?
Installing dictionary plugins could be done by just copying the plugin into /Library/Dictionaries. But that only works for the first installation. If you want to update and overwrite a plugin the Finder will abort copying because of open files. The install packages kills all dictionary processes before copying the plugin file, so you don‘t have to bother to do it by yourself. When showing an entry I‘ll only get an empty page. This happens if you have renamed the dictionary inside dictionary.app. You can‘t use the character <. Look up in Dictionary will always open new Dictionary windows. Since Snow Leopard the command "Look Up in Dictionary" eg. from Safari opens separate windows for every word. The following Terminal command will configure the Dictionary to behave like in Leopard, so the look up will reuse the existing Dictionary window.
