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Program error(Mac OS)Mac - When I run the installation file, a warning window appears: “nemonic_installer_vx.v.v.pkg cannot be opened because it is from an unidentified developer.”

If a warning window appears as below, click on the OK button to close it and continue the installation as follows : 

1. Select the installation file from finder, right-click on it and select the "open" menu



2. Select the "open" button


3. If a window appers as below, continue the installation as usual