I've tried to install this plugin on wordpress 3.0.3 without success so started a completely clean install of wordpress 3.0.5 with no plugins and no themes, just the standard twentyten and still can't get this working. It doesn't run from the plugins plage on wordpress so I downloaded and installed manually according to the install instructions. It didn't create the WPPA or Thumbs directories so I've created them manually. I go back into wordpress plugins and try to activate and get a 500 Internal Server Error.
Clearly, I'm no techie but this is an epic fail for me.