Hi guys!
I been having the same problem all morning. I use wix and also i redirect some domains on other host to my wixs pages.
I solved it by going the avast sttings and in EXCLUSIONS typing on file path and on url (i did it on both) the domains that are not workin
i eve add in exclusions http://editor.wix.com/html/editor/web/renderer*
then click ADD an it worked again!
I hope it work for you too! let me know!
Best Vibes
Niko