Latest release of Mechjeb docking autopilot misses by about .5 meters every time. Spacecraft unable to dock when this far off center.

• Have you selected the docking ports explicitly on both sides (control from here; set as target)?
• Could this be issued due to a wrong attitude adjustment?

Could you please provide further information.

You could also check if the problem is still occurring in the current development version: http://jenkins.mumech.com/job/MechJeb2/lastStableBuild/