Publishing or testing project does nothing - html5 canvas with imported .ai file and buttons

When i first created the project and added the first animations and the first button, it published perfectly and i was able to upload it to a server and test it on different devices. Everything was good. But when I continued working on the project and added another button and another animation, somewhere along the way, it became corrupted. 

I've looked through the publish settings, fiddled around. I've tried deleting the new things and still nothing but a blank page, when I test. 

Can anyone help me solve, what has gone wrong?

The project files can be downloaded from wetransfer here: https://we.tl/t-vpKULbuVMO

I tried attaching the imported .ai-file and the .fla project file, but got this error message:

Correct the highlighted errors and try again.

• The attachment's varde genbrugsplads.fla content type (application/octet-stream) does not match its file extension and has been removed.
  The attachment's varde genbrugsplads.ai content type (application/postscript) does not match its file extension and has been removed.