Can't open Audacity

Hello: I downloaded audacity-macosx-ub-2.0.6.dmg yesterday and installed it according to the instructions.
When I try to run Audacity I get the error message shown in the attached screenshot.

When I delete v 2.0.6 and reinstall v 2.0.4, I get the same result, although it used to run without problems.

What should I do to solve this problem, please? (v 2.0.6 reinstalled)

MacBook Pro
OS X 10.8.5
Screen Shot 2014-09-30 at 23.33.11.png

Did you do your system upgrade recently? Go into your Mac system preferences (Apple > System Preferences > Security) and make sure your Applications permissions are set as in the attached picture. Also, it may not let you install it if you’re not on-line.

There’s also a way to override that restriction.

That may work the same way in Mountain Lion.

Screen Shot 2014-10-01 at 14.24.06.png