I wish I could find a copy of the e-mail we sent to Meridian listing the "hidden" files OSX did not remove after I tried deleting then reinstalling Control:Mac. After we removed those files I was able to remove the guest account where Control:Mac would install and put it back in my main Admin account. Sounds like you have the same problem.

Jim
Wilson Alexandrea X2 Series 2
D'Agostino Momentum M-400 Amps & Pre Amp
dCS Vivaldi DAC, Upsampler & Clock
SME 20/3 & Esoteric E-03
Transparent OPUS SC & Interconnects