@RoverDude, hi, I've experienced a bug, when warp drive wasn't working (in warp mode). I was swearing, because lifting up 1200 parts cargo (dozen of probes + uks base parts) takes too long due to parts count. But then I go to VAB and realized that warp drive was the root part of my vessel (and thought that it was a cause). I changed it to command pod and it worked normally.