Barranda

Hey guys, I really love KSP and have been playing it on and off last year and now i seem to have a problem with the HX1-A-375 Reinforced Docking Port (3x). No matter what I try I can't dock using these docking ports. http://imgur.com/PYdPJJC I'm using the newest KSP version via steam and did a clean install with B9 aerospace (via Curse). Still no succes. Any idea what this causes and how to fix it? Thanks in advance! Barranda