isc.warn() icon not loading.

Reproduction Scenario -
1. Make sure that all cache is cleared from your browser.
2. Program your app in such way that is sends out a warning (using isc.warn) when it detects any loss in connection with the web-server.
3. Stop the webserver.
4. The dialog pops up, with the relevant message but the warning icon (yellow triangle with exclamation mark) is not loaded.

Observation -
I am seeing the following error on console -
GET isomorphic/skins/SAM/images/Dialog/warn.png net::ERR_CONNECTION_REFUSED


which essentially suggests that the browser was not able to download the warn.png.

I was wondering if it is possible to add the image in css hence browsers using CSS3 will not face the issue?

Please correct me if I am wrong.

FYI - I am using SmartClient Version: v9.1p_2014-08-08/Pro Deployment (built 2014-08-08)