I know it is frustrating, I have spent a lot of time angry at cocoonjs over the last year. I don't think a "working capx" will help you, it sounds like the issue is somewhere else.
Some things to check based on my own experiences and stupid mistakes:
Did you export as cocoonjs?
Did you upload the zip file to a host and type the path correctly? Including the .zip at the end?
Are you using latest update of launcher?
If you can, click the fps once it starts and see if there is an error.
Try compiling your zip using the cloud compiler and see if you can run the game in xcode.
You can now export as html5 and use cocoonjs as well, but the features from the cocoonjs plugin don't work: