2.0.3 Works as advertised on Win XP 32-bit, but only if you install it properly, and RESTART the editor. It does not replace firebug.
Does not work for me. On this page: https://sourceforge.net/projects/cssexplorerplug/forums/forum/1015062/topic/3622610 They say, regarding the empty gray window: "We are working on a new version of CSS-eXplorer. Updates soon. "
There are no 4 star reviews.