Installing ORCA on Mac

Click on the download link, which will prompt this pop-up window. Choose "Save File."

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Down load screen shot

Click orca_mac.zip and "Save file."

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ORCA zip

Once downloaded, the zip file will appear in your downloads. On Firefox and Safari, you can access the downloads in the browser toolbar. Double click on "orca_mac.zip."

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Download zip screen shot

Once your computer has extracted the ORCA file from the zip file, a window will appear with "ORCA.pkg."

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ORCA package screen shot

Double click on ORCA.pkg. You might see this message:

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ORCA warning message

Go to the apple in upper left-hand corner, and choose System Preferences.

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Apple finder screen shot

Find the "Security and Privacy" option, and select "Open Anyway" where it mentions ORCA.

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Security and privacy settings screen shot

ORCA should then install. Follow the prompts to complete the installation.