Creating an external BDC list, from within sharepoint is no problem . I know about the BDC permissions that need to be set in the Central Admin aswell.
I tried to do the same with VS2010 and when deploying i'm getting this nasty error : Access Denied by Business Data Connectivity . (see screenshot)
The exact same error occurs when trying to set the MetaData Store Permissions in Central Admin. (see screenshot). Changing The Object Permissions works only the MetaData Store permissions give this error
Thanks for reading,
edit : http://img18.imageshack.us/img18/9789/accessdenied.png