This is most often caused by your mail client trying to 'unzip' the license file. Try the following steps:
You should receive an email from FilmConvert with your license file and activation instructions within a few minutes of your purchase.
To fix the license problem please make a backup of Macintosh HD/Library/Application Support/RubberMonkey/Profiles or have the original camera pack installers handy.
Next delete Macintosh HD/Library/Application Support/RubberMonkey, then re-install the plugin.
Your FilmConvert license allows you to activate the software on up to 3 machines at one time. If you’ve reached your max activations limit, you will need to deactivate an existing machine before you can activate on your new computer. You can use our Deregister app to move a license from one machine to another: see here for instructions.
If your old computer is no longer active or able to be deregistered, please contact us.