An extension is a piece of software that can be added to an Adobe® application to enhance its capabilities.
Installer is an application included in OS X that extracts and installs files out of *.pkg/*.mpkg packages. Its purpose is to help software developers create uniform software installers.
Please make sure that you have removed all previous versions of the extension. Remove the following folders:
/Applications/Adobe Illustrator CC 2015/Plug-ins/ObliqueProjection
/Applications/Adobe Illustrator CC 2015/Plug-ins/com.63mutants.ObliqueProjection
/Applications/Adobe Illustrator CC 2015.3/Plug-ins/ObliqueProjection
/Applications/Adobe Illustrator CC 2015.3/Plug-ins/com.63mutants.ObliqueProjection
Make sure that the Adobe® Illustrator® application is not running. Double click on the downloaded *.dmg file and follow the onscreen instructions:
The following window should appear:
Now, double click on the *.pkg/*.mpkg file. Note: A warning message may appear that you are trying to install an application from an unidentified developer. Like this:
If so, hit OK to close the window. Go back to the *.pkg/*.mpkg file, right-click on it and choose Open With > Installer.app:
The warning massage pops up again but now you can choose to open the file. Hit Open:
The Welcome Screen should appear:
Hit Continue and select Destination. This should be the Drive where you have your Adobe® Illustrator® application Installed. By default it is Macintosh HD:
And Install. The installer asks you for password to allow to install this new software:
The installation was successful. Hit Close. You can now Eject the plug-in drive:
Your Plug-In has been installed. You can now launch the Adobe® Illustrator® > go to Window > Extension. Your tool is there!