Connection Problem

I’ve seen this problem on here before but have not seen any solution.

I have a My Book Live (latest firmware) and I’m using WD Photo latest version on an Iphone 4s. Works OK on WiFi, using 3G I get this message.

WD Photos The operation couldn’t be completed (nsurlerrordomain error 1200)

Does anyone know how to sort this out?

Just noticed something I think is odd.

I tethered my Ipad to my Iphone using 3G on Iphone  and WD Photos works on the Ipad. Must have something to do with the Iphone software.

Just found another thing, I’m now using another Wi-Fi network and I’m getting the same error message