Before installing TurboCAD Mac Designer 10, please press on the Apple logo (upper left corner) then press System Preferences then go to Security & Privacy.
Then on the General tab press the padlock button (lower left corner) identify with administrator account
Then change settings to Allow apps downloaded from App Store and identified developers
Then lock the padlock, close this window and restart the computer.
Now try to install TurboCAD Mac
On the first time of use you will be asked to license the software. Please use the supplied key and code in the order confirmation email to register the software.
The application will restart to apply changes.
Once the software is installed you may run it from Applications list directly.