Hi,
Great tool.
I noticed I get \ added before a background image url to the custom css somehow so the image doesn't get shown.
I tried to add
#bekijk {
background: url("/images/koop.png") no-repeat scroll left center #4A7CD2;}
But this changes somehow to
#bekijk {
background: url(\"/images/koop.png\") no-repeat scroll left center #4A7CD2;}
http://wordpress.org/extend/plugins/custom-css-manager-plugin/