Outlook doesn't load Safe Sender List

I created a GPO to automatically import a safe sender list.

If I navigate to HKEY_CURRENT_USER\Software\Policies\Microsoft\office\14.0\outlook\options\mail I see a JunkMailSafeSendersFile and the data points to the network path that contains the file. There is also JunkMailImportLists that is set to 1. I can manually import the file in Outlook so I don't think it has

anything to do with the file content or permissions.

The wonder stuff is, in other site, the configuration works perfectly.

Thanks to all who post.