extension manager question

I am not a technical person and was just trying to install an extension (Language Tool) into Writer. I have Java that I just downloaded (again) from their website as the current version. I also am using the current version of Libre Office and Yosemite, all in English. I was trying to follow step by step instructions on how to install the extension but I keep get the following and my only option is to push ok which makes it go away and I am back to the window I started from. It does seem that the extension is on my computer, but I don’t know as I don’t see it on the toolbar and this Extension Manager window looks as if maybe something is wrong but I understand nothing of what it says. Naturally I cannot copy and paste the error (?) so I will do my best to copy it exactly.

(com.sun.star.lang.DisposedException) {{{Messsage=“Binary URP bridge disposed during call”, Context=(com.sun.star.unoXInterface)@11c2c8008}}}

If anyone can tell me anything about this situation I surely would appreciate it.

Duplicate of Q53431.

You’re most welcome to find the solution here: forum.languagetool.org