If your server doesn't allow for Dynamic Loading of extensions, then you will need to modify your php.ini in order to load the ionCube loader.
You can upload the folder "ioncube" that is inside of the ionCube version of the calendar to your server, and then go to yoursite.com/calendar/ioncube/ioncube-loader-helper.ini. That file will help you figure out what you need to do to enable ionCube. Then, once that is done, you can redo the upgrade steps.
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