topic Re: Error Code 4004 in ArcGIS API for Silverlight Questions https://community.esri.com/t5/arcgis-api-for-silverlight-questions/error-code-4004/m-p/738329#M18903 <HTML><HEAD></HEAD><BODY><SPAN>Have you confirmed that the Map property on the Navigation tool is set correctly?</SPAN></BODY></HTML> Wed, 06 Jun 2012 05:04:21 GMT JoeHershman 2012-06-06T05:04:21Z Error Code 4004 https://community.esri.com/t5/arcgis-api-for-silverlight-questions/error-code-4004/m-p/738328#M18902 <HTML><HEAD></HEAD><BODY><SPAN>I get the following error when I try to use the navigation tool:</SPAN><BR /><BR /><SPAN>An unhandled exception ('Unhandled Error in Silverlight application)</SPAN><BR /><SPAN>Code: 4004</SPAN><BR /><SPAN>Category: ManagedRuntimeError</SPAN><BR /><SPAN>Message: System.NullReferenceException: Object reference not set to an instance of an object.</SPAN><BR /><BR /><BR /><SPAN>Any suggestions?</SPAN></BODY></HTML> Tue, 05 Jun 2012 20:56:11 GMT https://community.esri.com/t5/arcgis-api-for-silverlight-questions/error-code-4004/m-p/738328#M18902 TanyaOwens 2012-06-05T20:56:11Z Re: Error Code 4004 https://community.esri.com/t5/arcgis-api-for-silverlight-questions/error-code-4004/m-p/738329#M18903 <HTML><HEAD></HEAD><BODY><SPAN>Have you confirmed that the Map property on the Navigation tool is set correctly?</SPAN></BODY></HTML> Wed, 06 Jun 2012 05:04:21 GMT https://community.esri.com/t5/arcgis-api-for-silverlight-questions/error-code-4004/m-p/738329#M18903 JoeHershman 2012-06-06T05:04:21Z Re: Error Code 4004 https://community.esri.com/t5/arcgis-api-for-silverlight-questions/error-code-4004/m-p/738330#M18904 <HTML><HEAD></HEAD><BODY><SPAN>Your right - I forgot to add Map ="{Binding ElementName=MyMap}". I guess that is important. <span class="lia-unicode-emoji" title=":face_with_open_mouth:">😮</span> Thanks for your help.</SPAN></BODY></HTML> Wed, 06 Jun 2012 15:15:10 GMT https://community.esri.com/t5/arcgis-api-for-silverlight-questions/error-code-4004/m-p/738330#M18904 TanyaOwens 2012-06-06T15:15:10Z Re: Error Code 4004 https://community.esri.com/t5/arcgis-api-for-silverlight-questions/error-code-4004/m-p/738331#M18905 <HTML><HEAD></HEAD><BODY><SPAN>Hi folks,</SPAN><BR /><BR /><SPAN>I encountered a similar issue which I started to run the Silverlight Application, it always shows somehow a security issue and feature layer info issue message, please take look at the attached screen shot, if you have any ideas to fix the problem, thank you in advance.</SPAN><BR /><BR /><SPAN>Zhanping Shi</SPAN></BODY></HTML> Thu, 06 Feb 2014 14:06:54 GMT https://community.esri.com/t5/arcgis-api-for-silverlight-questions/error-code-4004/m-p/738331#M18905 ZhanpingShi 2014-02-06T14:06:54Z