Getting Error Trying to Enable Roles on ASP.net Web Site Administration Tool

I am attempting to add another application to the Web Site Administration database and in the process I need to enable Roles. However; when I attempt to do so I get the following error:
Access to the path C:\webs_password_reset\Foundationboard_password_admin\membership\membership\membership\web.config' is denied. at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost) at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share) at System.Configuration.Internal.WriteFileContext.ValidateWriteAccess(String filename) at System.Configuration.Internal.WriteFileContext.Complete(String filename, Boolean success) at System ...