Hmm… two things could be wrong.
Firstly, try adding a “plugin-path” line to Config.prc pointing to the location of the directory that contains the pandagles dll.
Secondly, make sure the Config.prc file is loaded at all, by setting the PRC_DIR environment variable to the directory containing it.
PS. I also notice there’s “panagles3” in your Config.prc file. Shouldn’t that be “pandagles2”?