I loaded M6 on top of a clean (unpatched) dev. seat of 6.3.2.
I followed the install instructions (I got one warning about ldqnx.so.1 link to libc already existing, but otherwise it 
went OK. I copied the new binaries to / per the document, so I could create a 6.4 boot image.

Any image I build from /build/boot now hangs after the loading dots - 6.3.2 still loads from .altboot (with minor resmgr
 unknown symbol output). I've tried qnxbase, qnxbasedma. qnxbasedmasmp

I'm guessing that I've done something wrong - any suggestions ?
Apologies if this is known errata - if that's the case, what should I be reading?

Dave