I do know that XCode 7.0 beta 6 (7A192o) and B4i 2.00 works. But, I've not upgraded to the full V 7.0 you have. This was a clean install of the beta and not an upgrade. I also remember having a problem building at first, too, but I don't think it was the same error you have shown and I don't remember exactly what settings I had to change in XCode to get it resolved. I'll try to remember.