BlackBerry browser error: The returned page had no content type, and therefore cannot be processed

I'm developing a mobile web application and I'm currently testing my site aga开发者_如何学Goinst a handful of different devices, such as iPhone, Android, and some BlackBerries.

The BlackBerry Bold 9700 (OS 5.0.x) can access my site with no problem, but the BlackBerry Tour 9630 (OS 4.7.x) gives me the following error message when I try and access the site.

"The returned page had no content type, and therefore cannot be processed"

My only option is to click "Ok" and I can't access the page.

Any ideas?

Try sending mime type with http headers. For asp.net you simply do

    HttpContext.Current.Response.ContentType = "text/html";