Multi-language Responsive Portfolio add-on doesn't work with 4.4.2/theme.

I have a completely fresh install with only your theme, jetpack and basics and you can’t create posts, pages or anything when you have Multi-language Responsive Portfolio addon (required to be used with your theme) activated. The create page / post / album / etc… goes to a blank page in the back end when you try.

Please advise/repair or let me know how I can fix. I have all the other plugins enabled except for that one and the site works fine now but of course I want to use that portfolio feature!!

Please advise.