How to Intall M4V Converter Plus on Mac 10.8 Mountain Lion

When installing M4V Converter Plus on Mac OS X 10.8(Mountain Lion), you may get the aforementioned error dialog saying that M4V Converter Plus can’t be opened because it is from an unidentified developer. Why does this happen? It is because Mac OS X 10.8 includes some new features to improve security for users. And one of the new default options on Mac Mountain Lion prevents users from being able to install or launch applications which are not downloaded from Mac App Store, or which have not been digitally signed by the developers.

Here the following is a brief guide on how to install M4V Converter Plus on Mac Mountain Lion.

Step 1 : Go to System Preferences > Security & Privacy

Step 2 : Enter your account

Click the lock icon in the lower-left corner and enter your administrator username and password

Step 3 : Under "Allow applications downloaded from", select "Anywhere"

You may also refer to the screenshot as below:

Add files

After that, you can launch and run AVCLabs M4V Converter Plus on your Mac OS X 10.8 normally.

Note: You can change the security setting back to “Mac App Store and identified developers” or “Mac App Store” as desired, for improved security.

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