Silverlight onLoad event not fired inside Google Wave

I am creating a wave gadget base on Silverlight 3. It all works great. Problem is that I want to add some functionality when SL control get loaded. So In "Object" definition of SL, I have added a param for "onLoad" and added a dummy JS function in the gadget to have a simple alert. But I am not seeing that alert when gadget gets loaded. After debugging I saw that "onLoad" event for silverlight control never fired. When I test the same SL control in a stand alone test page, "onLoad" does get fired appropriately. I think it has something to do with how Google Wave client hosts the SL control. Any information or help will be greatly appreciated.

thanks

I also tried to use silverwave and have the same problems. The XAP loads and the Constructor seems to be executed, but the control stays empty.

Have you found an answer?

After many hours I found an answer, at least for my question.

1. All URLs must be HTTPS (I forgot the Silverlight.js)
2. You need a clientaccesspolicy.xml in your Webroot. Found here

Now it works perfectly.