Caption Id= Issue When Posting to Facebook

I LOVE GK Portfolio with the exception of one thing: when I post anything to Facebook, whether I do it manually by pasting the link or using Jetpack Publicize, the post appears in Facebook with an ugly “caption id=……” blurb instead of the first paragraph of my post. How do I fix this? I can’t post to my Facebook page anymore because of this and I really would like to.