Your dumb STFU if your not going to help.
Double Click on SystemVersion.plist
Click on the arrow looking thing next to root
Change Product Build Version to : 8J2135a
Change ProductUserVisibleVersion to 10.4.7
Change ProductVersion to 10.4.7
Bame Shapeshifter works with no errors. Enjoy themes again.
hmm....i've used get info to change the permissions and its still not letting me save the plist.