Yes, it also freezes here at the end but if you create the patcher package and then move the patches foldes to the root you should be able to run the patcher in single user boot mode. That would be the correct way of doing it cause SystemUIServer is open when the interface is loaded.
How you may ask, here is a step by step:

1- once marvin is done look in the desktop for the amd.patch.folder and move the "patches" folder to the root of the partition (/)
2- reboot
3- in chameleon boot in single user mode (-s)
4- follow these terminal commands:
Reboot, and now everything should be fine.

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CPU: AMD Athlon 64 3000+ @2.3Ghz - Motherboard: ASUS A8N-SLI nForce4 SLI - nForceLAN by eno - SuperNForceATA by Medevil - RAM:2 GB DDR 333Mhz Audio: ALC850 Video: XFX nVidia GeForce 8400GS 256Mb (0x06e4) QE & CI from Chameleon 2 RC4Ethernet: Realtek RTL 8139 Series (working out of the box) OS: Snow Leopard 10.6.4 (aryajuanda's guide) + Windows XP 64bits