Hi druskus
In your case, there seems to be a mixture of SEF url's and a subfolder, where Joomla is installed. The <base href=...> in your head seems not to be built correct.
I think, the easiest solution would be to alter 1 line in the view:
Look for the file /components/com_opensim/views/maps/view.html.php
There, around line 59, where it says
$regionimage = "<img id='mapimage_%6\$s' name='mapimage_%6\$s' src='/".$assetpath."regionimage.php?uuid=%1...
change this to
$regionimage = "<img id='mapimage_%6\$s' name='mapimage_%6\$s' src='/CL/".$assetpath."regionimage.php?uuid=%1...
This should point to the correct images again.
Greetz
FoTo50