It seems that /system/bin/su binary has been swapped during porting.
You can install the latest Superuser app and su binary (Superuser-3.0.7-efghi-signed.zip) from Superuser homepage through ClockWorkMod. If your root is working, you should also be able to update the su binary from Superuser app. Superuser -> MENU -> Preferences -> Su binary.
Tnx for helping!
I like your ROM, and use it on my Blade and Skate!