Unable to evaluate expression because the code is optimized

Hello,

Unable to evaluate expression because the code is optimized or a native frame is on top of the call stack.

I'm getting this error, when i try to post on twitter from my asp.net website. The error occurs at "response.redirect" and i also referred "http://support.microsoft.com/kb/312629/en-us" this article. I cant append false, I need to redirect to the twitter authorization page and get back.

OAuthTokenResponse reqToken = OAuthUtility.GetRequestToken(

oauth_consumer_key,

oauth_consumer_secret,

Request.Url.AbsoluteUri);

Response.Redirect(string.Format("http://twitter.com/oauth/authorize?oauth_token={0}", reqToken.Token)); // error occurs here

Pls help me out!

Thanks

In advance