Error On Transferring ROM Image

[BfA]

So I've unlocked my phone previously but sent it away for repairs and now want to flash a new ROM. However, I get an error when the I get to the file transfer screen during the custom ROM loading process and it says:

Error [262]: UPDATE ERROR

The ROM utility has encountered communications errors during the update process. The program will guide you step-by-step to recover from the errors so you can continue with the update.

I don't understand why it doesn't complete as the GetInfo and EnterBootLoader files both run successfully on it after I've given permission for them to run. So there's obviously a connection between the two. I've unchecked the option for advanced data communication but that hasn't helped.

I've searched the various forums and google and found this error listed a lot but no definite solution. Has anyone managed to fix this on their own?