The odd thing is it only happens on postback.
The server can't fulfill your request. (Error loading client data:
System.NullReferenceException: Object reference not set to an instance of an
object. at
ComponentArt.Web.UI.BaseNavigator.LoadClientXmlNodeProperties(XmlNodeList
arXmlProperties, NavigationNode oNode) at
ComponentArt.Web.UI.BaseNavigator.LoadClientXmlNode(XmlNodeList arClientNodes,
XmlNodeList arXmlMembers) at
ComponentArt.Web.UI.BaseNavigator.LoadClientXmlNodes(XmlNodeList arClientNodes,
XmlNodeList arChildIndices, NavigationNodeCollection arNodes) at
ComponentArt.Web.UI.BaseNavigator.LoadClientXmlNode(XmlNodeList arClientNodes,
XmlNodeList arXmlMembers) at
ComponentArt.Web.UI.BaseNavigator.LoadClientXmlNodes(XmlNodeList arClientNodes,
Int32 iParentIndex, NavigationNodeCollection arNodes) at
ComponentArt.Web.UI.BaseNavigator.LoadClientData(String sData))Please contact
the server administrator.