Hi All, I have created Document Library in sharepoint 2007 using visual studio 2005 VSeWSS project. I have customize schema.xml file -- 1. Add Custom Fileds. 2. Add Navigation Fields 3. Add New Views 4. Customize toolbar in views but there are few things lacking 1. no multiple selection. 2. error in javascript "Message: Sys.InvalidOperationException: Type SP.EnumerableArray has already been registered. The type may be defined multiple times or the script file that defines it may have already been loaded. A possible cause is a change of settings during a partial update. Line: 1717 Char: 42 Code: 0 URI: http://server2010/ScriptResource.axd?d=Vvb5UMRmmiyxdLvUPN5gv1-tEy4zPZp9KkHWWH6UxDzUVwAMVOuNx7k6UQdPFIeaC37-R92GtxzHQdTv1oz2w1NrUptiaLp5SUgFy1E8WHI1&t=ffffffffec2d9970" any Idea Thankx Saumil Thakkar