Structured blogging problem

Everytime I try to look up an album in the Album Review, I get this message:

ERROR:Another plugin has included a different version of a Javascript Library (Prototype) required for lookups.

Anybody knows why it’s doing this? I’m running WordPress 2.0.2 with the theme Tarski 1.13 with the following
plugins:

– sb 1.0pre15,
– Askimet 1.14,
– Brian’s last comments 1.5.10,
– Gravatar 1.1,
– Live comment preview 1.7,
– Ultimate Tag Warrior 3.0.1 ,
– Ultimate Tag Warrior: Tag Archive 1.0,
– Sidebarwidgets 1.0
– Del.icio.us widget 1.0
– Google search widget 1.0