The only thing I can guess by the warning you received is that your Joomla configuration is set up incorrectly. This module uses 'JPATH_SITE' for the path to the image. If you will notice...
the JPATH_SITE variable shows.../public_html/asdv/asdv/modules/...
and the actual path on your site is
/public_html/asdv/modules/
There is an extra "asdv" directory showing.
Does this make sense? This doesn't have to do with my module, rather how your server is configured.
I'd love to change the world... but they won't give me the source code!