beta won't help, cause there a line is missing from the installation file
and then the picture that is in the zip file is not added to the right folder.
Yesterday I answered a user with the same problem. Here is the solution till RC1 come out
I forgot to add
<filename>joscomment/templates/modern/images/html.png</filename>
To the installation file. So the image that should actually load isn't there.
Please open the zip file, go to joscomment/templates/modern/images/html.png
Copy this image and paste it in components/com_comment/ joscomment/templates/modern/images/html.png
This should be all