I am using ICloud on my pc, IPads and Iphone. I'm syncing contacts and calendar items. I've had no problems until now. When I try to make a change to a contact on my windows 7 PC, it will not let me save the revised contact in the ICloud folder. It says I'm not authorized or a folder/file has been moved. I haven't changed anything as far as i know. It's critical that i be able to change contact information. How do I fix this?