Appcache working in Safari but not Chrome Windows 8.1

I have a webservice running locally (I also tried hosting it on Windows Server). Chrome debugger shows the appcache loading ok and chrome://appcache-internals/ shows the appcache itself.

As my app is using websql the only alternative browser for testing/control purposes available to me was Safari for Windows. The appcache works with this.

When I kill the webservice and reload the page, I get the standard Chrome ERR_CONNECTION_REFUSED error message. Also, under the resources tab in the Chrome debugger, the websql database is gone and the appcache is also gone.

I put my manifest file through a validator and it had no problems there.

Does anyone know if there's anything in particular I need to do?

Thanks in advance