The latest version of Cadent wineCellar does work fine with Apple's latest OS release: Mountain Lion (10.8). There is one exception: installing a new copy of wineCellar once you have upgraded to Mountain Lion from the installer you get from our web site will be blocked by Gatekeeper. Installing from the Mac App Store will work fine.
The workaround is to temporarily tell Gatekeeper to let you run applications from anywhere. You will find this setting under the Security & Privacy system preference. Once you have successfully run wineCellar once, you can return this setting back to where you would like it.