Hi, I took a look. Basically, what is happening with the paths is that your PHP is not recognizing the DS (directory separator) constant. I ran a var dump and it comes up as undefined. I've seen this a few time, usually on Windows servers, which is what you are using - though I'm not sure what the cause of it is, it's server related. In the RokGallery plugin folder, rokgallery.php, line 26:$rokgallery_plugin_rel_path = DS . str_replace(array('/', '\\'), '', dirname($rokgallery_plugin_file));
I changed it to:$rokgallery_plugin_rel_path = '/' . str_replace(array('/', '\\'), '', dirname($rokgallery_plugin_file));
Basically replace DS with '/' And it works.
I'm not sure what's up with the widgets, I can pass your info along to the devs and see if they know.
Also, I didn't have any issue with the WYSIWYG editor. Not sure what problem you are having.