Problems with latest Firefox for macOS

I’ve been using Firefox for testing my html5 projects because it was the only browser that allowed me to directly open an html5 project. The latest update to v. 68.0 has broken that. Now when I open the index.html file for a project, it crashes with the same set of messages:

  1. A series of the warning “Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at file:…”
  2. A warning for each font in my Assets folder that the font could not load.
  3. A fatal error “uncaught exception: Error: [lime.utils.Preloader] ERROR: [IOErrorEvent type=“ioError” bubbles=true cancelable=false text=“0” errorID=0]”

The only way I can open a project with a different browser was to do a build using “lime: test html5” which opens it in my default browser with the url “” I can then use that url to open the same project in any browser. To open a different project I would have to rebuild it first.

Has anyone encountered this? Is there a setting in Firefox I can change that will bring back the ability to directly open an html5 project?


This is actually a prime reason why we provide the local web server for lime test html5

Does this topic help?