Problem with Responsive Banner Slider

Hello,
I am using this bought module since some weeks.
Sometimes we get the follwing error: the url to the images are relative, sometimes the a google address is added to the url.

In source code it looks like this:

< div id="slider-130" class="nivoSlider">
< a href="/index.php/component/banners/click/1.html" target="_blank" title="Sparkasse Rosenheim-Bad Aibling">
< img src="www.google.com:443/images/sponsoren_bann...oren/spaka_roaib.png" alt="Sparkasse Rosenheim-Bad Aibling" />
(btw: I added a blank before the html command)

If I go to the backend and save the module again, it is fixed, reloading of the page does not help.

I found no way to force the error, it happens accidently.
Do you have any idea why this happens or what I can do to prevent it?

The page itself is secured with SSL.

Regards
Neil

Of course, sorry I forgot.
wsv-vagen.de