try to zip it with winrar.
Also see here, please:
I zipped it with winrar, and as i said the link you gave me is the one I used to try to export my project ^^'
I checked many times the video and the step by step tutorial and I think I do the exactly same thing :/
I took the plugin, used cordova to export, checked the same option, delete the config file, made a zip with winrar, and I have this error :/