I just spend the entire afternoon building a new Muse site. Saved it successfully and even did some previews in the browser. Shut my computer off (windows 10) and had dinner. I turned my computer back on and started Muse. Clicked on my new site, and after about 5 or 10 seconds this error appeared. I clicked OK and tried again and got another version of the error.
I read some of the older threads on this error and I don't know what to do. Originally, I had used SVG social icons in my site, but after reading that they may have caused this error I removed them. I replaced them with PNG social icons but still getting the same error. Then I deleted the PNG's and now have no social icons and still getting errors. Someone HELP ME PLEASE!!!
Sorry that you are facing this trouble.
I would like to take a look at it.
For sharing the file you can follow the steps explained here - https://forums.adobe.com/docs/DOC-8652 and send the link to me in a private message.
To do a private message hover the mouse on my picture and click "message".