We are trying to use our own basemapping for the ESRI mapping webpart, however, our basemap is blank when displayed in the web part. The cached basemap can be viewed in Silverlight applications outside of SharePoint.
We have cross domain and client access policies in place. IIS and mime are configured.
We have been able to add our ArcGIS server data to the ESRI basemap.
We are running ArcGIS Server 10, MOSS 2007 and Windows Server 2008. We are using kerberos authentication in MOSS.
Any ideas would be greatly appreciated.