One of the new features of OS X 10.8 Mountain Lion is the GateKeeper which gives the user more control when installing new apps in their system.
Most applications, especially those downloaded from third party source will be getting a pop-up warning message unless you're downloading from the App Store.
This is an example of the pop-up message that you will be getting:
To fix this, perform the following steps:
1.) Click on the Apple logo and go to System preferences:
2.) Then click on Security and Privacy:
3.) From the General Tab, Click on the lock icon and enter your password to unlock it:
4.) Under "Allow applications downloaded from", Select Anywhere:
5.) That's it, you may now run the Time Doctor installer.
To learn more about this issue, you can check Apple's knowledge base on Gatekeeper.
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