plugin Arch not displaying after weathermap

[Diskbox]

Hey all

I had everything working but with an older version of weathermap. Renamed weathermap plugin folder to weathermapold and added the new weathermap folder in it's place.

I have other plugins installed and all work fine. If I rename/delete the weathermap folder everything is displayed again and works so it's definately something to do with this folder.

Now when I go to plug-in management I see this:

Any help would be well received.

edit: running on 10.04, cacti 0.8.7e and PIA 2.6 and going from weathermap 0.97 to 0.97a