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For some reason Beta 563 VM closes before even it opens, without any bugreport. Only the console appears for 2-3 seconds. VTLB works great. VM 528 works normal.

The last thing in the console is this:
"Failed to alloc vu0mem 0x110...00 487"

Windows Vista SP1
Intel Q8200
Radeon x4800

For vista you need to try to run it right after booting the system and use "Run as administrator" when you right click the icon

have you got vm to work before?

I actually get this same problem, using XP64.

Have you tried a fresh install? i know after putting in a new exe sometimes i need to clear the pcsx2.ini (i think thats its name, i am not at my computer right now but it looks like that) in the ini folder.