Unity Player has crashed

Why i am getting this error?
Here error detail:

Setting error display: ‘Invalid Unity
Web File (Decompression Failure).’,
details: ‘’, link: 0

Here my script:

 string pageURL = "";
System.Uri uri;
string[] parts;

if(GUI.Button(new Rect(375,220,210,160)," ")){
uri = new System.Uri(Application.absoluteURL);
parts = uri.Host.Split('.');
for(var i = 0; i < parts.Length; i++)
pageURL = parts[1];
Application.OpenURL("http://www.mywebsite.com/?utm_source=mygame&utm_medium=" + pageURL + "&utm_campaign=logo");

Here my .unity3d file path:

That URL redirects to a hosting advertisement, probably that’s the reason the Web Player can’t download a valid file. Make sure your hosting permits .unity3d files.