0.6.3 sure can boot, I am using the 0.6.3 official release right now.When I put 0.6.3 in it does not boot, as soon I put 0.6.2 without changing anything she it works.
I am gonna review the config plist with the memory config and see if it works the way you are describing it.
Let's see, finger crossed...
Thank you for your help
Another net friend also tested my settings for the public package, which also works.
So, please do one step at a time.
1) update your OC to 0.6.3 properly
2) make memory config that same as your current memory config
3) spoof the memory config and see if the cMP can still boot
4) check if memory config is really spoofed
5) swap in the 32GB DIMM and make a memory config in OC that same as your actual memory config (expected can't boot)
6) spoof the memory config to something else which may allow the cMP to boot.