Thank you Andy for providing the new kernel and patches.
I Installed the kernel + AMD sysenter trap patch and added the following kernel flags to the boot string:
arch=i386 patcher_opts=2 -force64

Everything now seems to be working fine. Although I noticed I am still getting cs_invalid_page errors. Here are some of them:

CODE SIGNING: cs_invalid_page(0x1000): p=47[loginwindow] clearing CS_VALID
CODE SIGNING: cs_invalid_page(0x1000): p=46[mds] clearing CS_VALID
CODE SIGNING: cs_invalid_page(0x1000): p=88[fontd] clearing CS_VALID
CODE SIGNING: cs_invalid_page(0x1000): p=110[Dock] clearing CS_VALID
CODE SIGNING: cs_invalid_page(0x1000): p=111[SystemUIServer] clearing CS_VALID
CODE SIGNING: cs_invalid_page(0x1000): p=112[Finder] clearing CS_VALID
CODE SIGNING: cs_invalid_page(0x1000): p=115[fontd] clearing CS_VALID

Is there a way to get rid of them?

Thank you!
FX