my Silverlight is not working, why is that?

[ahu]

you can view the error in the following image, please help

[BrianOConnell]

Not very descriptive. Check the xaml file for xml errors, i.e. is it well formed. Maybe open it in Firefox.

[ahu]

You said if I install Firefox the problem will be solved, I've tried but it didn't work. Silverlight is a new software, there may be problems. Do you think this is a disadvantage?

[BrianOConnell]

You said if I install Firefox the problem will be solved, I've tried but it didn't work. Silverlight is a new software, there may be problems. Do you think this is a disadvantage?

No I think you misread what I was saying. You have a xaml file to create your silverlight app. It is giving you an error and I suggested it might be that the xaml file is badly formed. xaml is a form of xml and so it might be incorrect somewhere - a tag not closed, a closing tag with different casing and so on. I suggested you open the xaml file in firefox because firefox normally identifies the exact line of an error in xml files. Any xml parser would do. I was not suggesting that installing firefox would fix the problem. I haven't really worked with silverlight so I'm a bit surprised Visual Studio wouldn't give a more descriptive error.

[ahu]

I've recorded the error as a video file, you may watch directly from the link http://www.paslanmazbul.net/help/silverlightblend4.html