Ok, so I found incompatibilities when Buddy Wing is looking for stack count. Once it reaches that number in the case of Force Lightning requesting three Harnessed Darkness to cast (this should be the only time it uses this, due to being uninterruptible), on the Darkness Assassin tree and the equivalent abilities on the Kinetic Combat Shadow, if it follows a Discharge, Wither, or Dark Ward it hangs Buddy Wing completely. This is not immediately might not be the first time, second time, or third. However, it will happen, it is inevitable. I tried to thwart this with only allowing Force Lightning to cast with three Harnessed Darkness only after Wither or Dark Ward were on the target for at least 4 second and not after there was only 2-4 seconds left of those abilities. Once I did this it helps but now Discharge also was identified as a culprit too. If I had a Last Spell track I could tap into I could thwart this by not allowing it to cast after certain spells thus stopping lockups and removing the need to add timer checks to try to fix a problem that can't be fixed this way completely. If you need more info I will do my best but no log was produced with the error and until I get this or incompatibilities fixed (to which how many there really are I don't know) I will not be able to produce a proper priority routine for Darkness Assassins and Kinetic Combat Shadows. Yes kick I know you made a Kinetic Combat but it really does need to look for stack count unless at a lower level or else it is a waste of dps/energy/threat. Thanks!