I now realize that I didn't answered your question in the other thread. Sorry about that, I was sure I answered you several days ago, but apparently I didn't.
You are using a regular R1.2 Hub with @valor mini KCeptors, right?
The problem is they are not compatible. The wiring on the mini-KC connectors is different than the one in the regular KCs, so you might be getting a short circuit which is preventing the RPi from finishing the boot process.
In order to solve it you should use valor's mini hub.