Apple developer tools ioregistryexplorer modify error

Hi there,
I am using the most recent version (3.1) of the Apple Developer Tools.
Everything was running accordingly, but just this morning when I proceeded to start my suite, an ioregistryexplorer modify error occurred.
I don't know what could have been the problem, I have checked for the suite to have root access. Or does the problem lie in ioreg -lw0 regarding hardware addresses?
Thank you.
