Error HRESULT E_FAIL has been returned from a call to a COM component

Question

In Silverlight 4 app; what does this error mean?:

\"Error HRESULT E_FAIL has been returned from a call to a COM component.\"

It

Answer 1

Well, I was almost going to eat my computer.. At last, I find out the problem is that I MAYBE BY ACCIDENT removed one parameter of one Margin setting of an Image object in the XAML page, orz..

Margin="0,-20,0" 

which should be

Margin="0,-20,0,0" 

Obviously I didn't realized I have ever modified anything of the XAML, so I have been troubleshooting the code behind for "a little while"..

Fortunately, I found this post and rechecked everything include the XAML page.. that was ... something...