Getting MOM and CLI errors. How do I fix this and get CCC to install properly? I've tried searching and I don't understand.

 

You'll have to give more detail about your system hardware specs and what OS.

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Spigon: Phenom II 955BE @ 3.2, Arctic Freezer 64 Pro, Gigabyte GA-MA790FX-DS5, Asus 3870x2, ASUS Xonar D2X,
4 x 1gig OCZ2N1066SR2GK @800, Antec Truepower New 750, Antec 900 case. Vista x64 HP SP1
#2 Athlon 64 X2 4200+, 1950pro, Asus A8V-D, Enermax 465P
#3 2500 Barton, x800xl, ASUS A7N8X-E, Antec 400

I had this problem but this procedure fixed it for me, hopefully it will work for you too.

Uninstall CCC from control panel.

use drivercleaner.net to CLEAN THE CCC FILES ONLY.

Be careful here! Do not use it to uninstall all ati products amd drivers or it will screw up your system by deleting vital inf files that cannot be reinstalled in anyway apart from whoel os reinstall or system restore. (yes personal experience here unfortunately!)

install CCC from a component downlaod from the driver page.

Apparently the normal uninstal does not remove some stuff from registry that needs to be removed.

Hope it works for you.