I saw same problem, I could not finished install CUDA driver.
I think this problem is kextcache problem.
some wrong kext happen prevent making kextcache. (my problem by sonnet eSATA kext driver)
and can’t finish install.
it’s “kextcache 71” error.
in Terminal, type
kextcache -e
if same wrong kext in there, show list up.
remove those kext,will be finished CUDA install.
maybe it’s not gtx570 problem , it’s kext install problem.
sorry for broken English
thinks,
yuki