Topic: Airtight Simpleviewer v1.8 in LR3

How can I update that Simpleviewer-Plugin v1.8 within LR3? In LR2 I saw the correct background-color in my preview, now it sticks with 80% gray, no matter what color I choose. When I export the Gallery everything is correct, but... I want to see how it looks before exporting ;)