I have found that your examples perform a GET on "/examples/null". Since we use a custom error handler for 404 errors to redirect users, this is causing a problem for us. To reproduce the 404, first startup Fiddler and make sure you are capturing traffic. Then point your browser to
http://cutesoft.net/example/ThemeSupport.aspx, then click "Office 2003". You should see a pair of /example/null GETs.
Please fix this as soon as you can...