Nevermind, I solved it.
So, first what I did is try to find out if I reaaaaaly didnt change anything since last successful install. Nothing changed EXCEPT the drive I installed on. Now it was on a drive that was connected to ... white connector (probably SATAIII).
Changed the connector to the black one and the installer booted but stopped to the white screen with the spinning wheel.
I went back in Snow Leopard and made a User DSDT install with system utilities option ticket to "Installer" (using MultiBeast, of course).
It failed but it did what needed to be done (donnow exactly what)
I rebooted again and chose Installer from Chimera and it booted to the Installer app.
Installing now
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OK, i tried wiping the HDD clean, disconnected all other storage devices and STILL THE SAME ERROR! I even downgraded the BIOS to F4
You know whats the worse? I HAD LION WORKING!!! But now, using absolutely the same HW config, I cannot get the Installer to boot...
I even used an older version of xMove. I as well used rBoot, same thing, nothing changes...
Common guys, if we're stupid, just tell us and then throw as a bone with the solution.
Pleaseeeeee...