The thumbnails are working great now. Thanks for the file replacement.
I am using a bootstrap layout and would like to have kcfinder resize responsively. I would like to install it into an existing website page layout. I have a work-around using "jquery-example.html" in the "adapters" folder and then resizing using @media queries. This method is not as smooth as when you resize the browser window the full-screen version. Please let me know if I've missed something.
Thanks for you help Ray!