Using Comments Plus with Thesis

I've just started using the Thesis 1.8.5 theme, but there seems to be a compatibility issue with the Comments Plus plugin.

Does anyone know how to make this work please?

I found this https://premium.wpmudev.org/forums/topic/comments-plus-and-thesis , I'm not sure if there's a solution here or not, but as I'm fairly new to Thesis, I can't make much sense out of it.

Thanks