404 error getting classicui/openhab.map

Just starting with openhab, I have a simple site and when I open it in the browser the data is showing correctly, but when the underlying data changes the values in the browser are not updating. It seems to be failing fetching the data. In the openhab request log I see

[23/Mar/2016:15:57:33 +0000] “GET //classicui/openhab.app?sitemap=default&poll=true&__async=true&__source=waHome HTTP/1.1” 404 1443

Which I assume means it is unable to fetch the data. Searching has not provided a solution. Any help will be much appreciated as I am a bit stuck.

The same error here.
I wish You could fix that. This time there is no auto refresh,
and if I switch the switch ON on the Android app and do a switching on the web interafce,
it comes with an opposite because the TOGGLE function.
Anyway, in that case, the version 1.7 is the most stable edition?

1.8.1 is working fine for me. The problem is with 1.8.2.