Again why? will sometime you just don’t like the namespace anymore :-) , so you did change the namespace to project , this project use Entity Framework , after rebuild and run it oooopppsss :
“ schema specified is not valid. errors the entitycontainer name must be unique “
what ?!! here’s why will sometime visual studio is not that smart , when you rename the namespace and rebuild the project the old DLL that have the old namespace still there , because of that your EF was load both of assemblies the new one and the old one , if you read the Rest of the Error :
“ An EntityContainer with the name 'xxxxx' is already defined.”
so how you cane solved ? really !! how about deleting the old DLL !!