Server Error in '/' Application.

Object reference not set to an instance of an object.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

Line 34: 	templateBuilder.Append(config.templateskin.ToString());
Line 35: 	templateBuilder.Append("/images/dianhua.png\" alt=\"南宁注册公司电话\" /></a>\r\n  </div>\r\n</div>\r\n<div class=\"nav\">\r\n    <ul>\r\n        <li><a href=\"/\">网站首页</a></li><i></i>\r\n        <li><a href=\"");
Line 36: 	templateBuilder.Append(linkurl("about","zhuce"));
Line 37: 
Line 38: 	templateBuilder.Append("\">公司注册</a></li><i></i>\r\n        <li><a href=\"");

Source File: d:\1\1003\html\aspx\about_show.aspx    Line: 36

Stack Trace:

[NullReferenceException: Object reference not set to an instance of an object.]
   cms.Web.UI.BasePage.linkurl(String _key, Object[] _params) in D:\SHCMS\cms.Web.UI\BasePage.cs:48
   ASP.aspx_about_show_aspx.OnInit(EventArgs e) in d:\1\1003\html\aspx\about_show.aspx:36
   System.Web.UI.Control.InitRecursive(Control namingContainer) +321
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +692

Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.42