Unable to return AddressBook.Shared or AddressBook.Owner

Question

We're attempting to identify users who make heavy use of shared address books and folders. I'm receiving "AddressBook provider does not support this property." Code is below.
GroupwareTypeLibrary.Application5 gwapp = new GroupwareTypeLibrary.Application5();
gwapp.SetTrustedApplicationCredentials(strAppName, strAppKey);
GroupwareTypeLibrary.Account9 gwacc = (GroupwareTypeLibrary.Account9)gwapp.MultiLogin(st rUser,null,null,null,null);
gwacc.MultiLoginAddressBookSupport = true;
// SHARED FOLDERS
foreach (GroupwareTypeLibrary.Folder f in gwacc.AllFolders)
Console.WriteLine(f.Name+","+f.Shared);
//RULES
foreach (GroupwareTypeLibrary.Rule r in gwacc.Rules)
Console.WriteLine(r.Name + "," +r.Enabled);
//Address book
foreach (GroupwareTypeLibrary.AddressBook4 ab in gwacc.AddressBooks)
Console.WriteLine(ab.Name + "," + ab.Shared);

Answer 1

I should have added "When I finally did have internet again at home & was able to sync last Nov..." before "Not only did I change perferences to combine my computer/iPhone/MobileMe Address Book, but I also asked Address Book to put any new contacts from my iPhone into a new folder. "