Reverting back to 2.1

[altjx]

I tried to go from Bugless Beast V0.1 to Android 2.1 stock image but got this error

"Tried to go to Stock 2.1 and got this error

Installing: SDCARD:/clockworkmod/download/android.antbox.org/koush/motorola/sholes/sholes-2.0.1.zip
Finding update package...
Opening update package...
Installing update...
assert failed: !less_than_int(1259199777, getprop("ro.build.date.utc"))
E:Error in /sdcard/clockworkmod/download/android.antbox.org/koush/motorola/sholes/sholes-2.0.1.zip
(Status 7)
Installation aborted.
/tmp/recovery.log was copied to /sdcard/clockworkmod/recovery.log. Please open ROM Manager to report the issue.ClockworkMod Recovery v2.0.1.3"

Sorry if I posted in the wrong section >_<

Anyone know how to revert back to Stock 2.1? Getting ready to sell my Droid