Addon problems

Unable to install Writer2Latex
platorm: Linux Mint 17, english
LibreOffice Writer Version: Build ID: 420m0(Build:2)

I got Writer2Latex from here:

Then tried to install Writer2Latex using Extension Manager

I got the following error when I tried to add Writer2Latex in LibreOffice Writer:

Please advice.
Thank you.

Hello admin:

When I use this “Unable to install Writer2Later” as title, I was not able to post my question.