In Mac 10.8 system, Apple introduced a new security function-Gatekeeper, which strengthened the control over the source of application installation. By default, it only allows the installation of applications from the App Store and signed by registered developers of OS X. Of course, advanced users can choose to allow the installation of applications from other sources. Here are ways to change it:
Go to System Preferences and select {Security and Privacy}. Then click the lock button at the bottom left of the {Security and Privacy} interface to open it. When the lock is opened, select {any source} from {applications allowed to download from the following locations}.
Then try reinstalling the driver. If not, please take a photo at your convenience.
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