Can you provide any error messages that were in the browser error console or link us to the uploaded game that is not working? Most of the time, a black screen after export is either due to server misconfiguration, or you just forgot to upload all the files.
Also, the .capx file is corrupt - it's missing a bunch of project files. That might explain it.
Ok I checked the chrome console, it was failing to load a logo. If you remember a while back when my project was randomly corrupted and I had to manually repair it, evidently my logos were 0x0, and the code was trying to reference them. It was a simple as reloading them. Thanks for the help.