c:\Program Files (x86)\Xara\Xara-Photo_Graphic_Designer_7\Xara Picture Edtitor\PSplug-ins\Downloaded Plug-ins\
This just doesn't look right to me.
If your plugins ore in Downloaded Plug-ins folder then you need to set the path to that folder.
something like c:\Program Files (x86)\Downloaded Plug-ins\
or where ever your Downloaded Plug-ins folder is located.