In my cases, it seems to want to do the 90 degree rotation literally on the pad at ignition without some kind of steering fins. If it cant rotate it then it continues to apply force usually causing the rocket to pitch most generally in the 10 o'clock direction if your looking straight on in the default view followed by a crazy attempt to roll the rocket which normally almost always will cause it to end up flying in a direction that ends in a powered nose first direct flight into the ground. The odd thing is that once I added external control surfaces then it seemed satisfied. I am running the Mac Steam version of KSP so not sure if that may cause any differences. Like I say, as long as either the rocket can survive and stay vertical through the 90 to 180 degree roll or you put some kind of fins on it then it works. So far this behavior is fully repeatable. I noticed earlier a DLL update was posted to address launch issues. Has the normal main download been updated yet? I might attempt to redownload the base version and attempt the test again. Second question, what happened to the auto intercept feature that would automatically bring you to within X distance of the target craft? I noticed that seems to be missing now. Third Question, how does the timed launch feature actually work? It seems that it launches not to the same orbital location but just to the same orbit as your target and then you have to use a transfer/phasing orbit to do the final approach and docking. It would be nice if you could specify in the launch that want the craft's final position to be within a certain distance of the target and possibly whether it is to attempt a direct launch or launch to a lower stable orbit and automatically transition to using the orbital maneuvers to close the distance (to conserve fuel for instance).