KDE Theme Manager not working

[thebleh]

Hi guys, I'm having an annoying problem with KDE's Theme Manager. I can import downloaded themes without any errors, but when I select them from the list it says that "This theme does not contain a preview" and when I click the apply button nothing happens. The default themes work fine. I am using Kubuntu 8.04 with KDE 3.5

Thanks in advance for any help.