I have my pictures on my computer that I sync to two different locations for backup purposes. When I set it up I did it with a Read/Write key which I used in the two other backup locations. I want to change it so they are read only as I will only be updating the original location. I am using the latest version of Sync. I tried to use the update key feature. When I do, and try to enter the new RO key, it tells me I need a R/W key. draugr