I am seeing the same issue with the probe-claw. I have modulemanager 2.0.8. I also have several other mods, the most relevant of which might be KAS, Kethane, maybe Kerbal Joint Reinforcement. Also possibly relevant, I don't have TAC, so I removed references to TAC resources from Resources and deleted the refinery and greenhouse. I'm going to try to reproduce this issue in a clean version. ---- OK, I installed a clean version of KSP and then added Hyperedit (for testing purposes), and a clean copy of Asteroid Cities. Using Modue Manager 1.5.7 (from the asteroid cities zip), KSP .23.5, standalone version (that is, not the steam version) x64. To reproduce the issue, I built a very small craft with the Philly Asteroid Analyzer and used hyperedit and short-range manuvering to position the craft nearby. I then armed the PAA, and attempted to dock with the asteroid. The PAA did not engage when in contact with the asteroid. I repeated this test about twenty times with different angles, speeds, and rotations with no change in behavior. Additional notes: The PAA appeared to enter an odd state: as soon as I armed the claw, the option to "release" and "analyze" appeared on the context menu for the claw, despite the claw not having anything engaged. The option to "free piviot" was also present, but did not appear to do anything initially. I was able to verify that asteroids contain 1000 water by default. I used a C-class asteroid in both my modded test and my clean test. I've verified that at 2.5 AGU works fine. ---- Other than working in QA, I have to say, I've been LOVING this concept. I'd like to know what changes would be needed to remove TAC resources and have it work with just Kethane and Extraplanetary Launchpads.