Page Redirect Not Working

I've successfully used this method I've built for some time now:
/// <summary> /// Redirects control to the specified web page. If the extension is not specified then ".aspx" is assumed. /// Note: Could also use "Server.Transfer" - See http://www.developer.com/net/asp/article.php/3299641 /// </summary> /// <param name="pageName"></param> /// <param name="paramString">Format: param1=value1&param2=value2... (no quotes around values)</param> /// <param name="returnMe">If True then a param value will be added to give the dest page the ability to return to the calling page</param> public static void PageRedirect(string pageName, string paramString, bool returnMe) { string appPath = GetAppPath(); string fullPath = appPath; try { pageName = Tools.EnsureSuffix(pageName, " ...