MacPro5,1 Not working?

So curious, how come if i try to use MacPro5,1 it doesn't wanna work, I believe it fails to boot up.

I just use MacPro3,1 but was just curious why I could use 5,1

read the kernel error log and then you know.
( mostly because of TyMCEDriver)

I had the same exact problem when I first built my hac... here are some of the entrees quotes, and a link to my TS page

"One quick thing about using MacPro5,1 definition.
I tried this and it KP'd every time. Turns out the culprit was AppleTYMCE.kext in S/L/E.
Deleting it made everything play nice."

"Regarding the definition files…. And AppleTYMCE.kext… the actual file in the finder is AppleTyMCEdriver.kext under S/L/E in finder.. I went ahead and deleted the file then ran multi beast again… installed the 5.1 mac pro definition and repaired my disk permissions."

it shows mac 5.1 or MAC pro mid 2010... no problems now

viewtopic.php?f=22&t=46840