Background image NOT showing up when Publishing

[duncan]

This turned out to be this issue:

Cautionary tale about antivirus software

In the process of troubleshooting an issue of two different customers with very little in common (different countries, different web hosts, different macOS versions, different different project files), after much head scratching, we found something unexpected and surprising. The symptom was the site was rather broken (missing images mainly). Upon digging a bit more we found that a supporting Javascript file (jquery.xxxx.js) was badly mangled. Specifically the first 64K bytes of the original fil…