A company staffer going by the name of EA_Jaga on the EA forums informed players that the error had been fixed, but the dozen or so posts right after from users still getting the "Transfer Failed" error indicates otherwise.
We've reached out to EA for some sort of timetable on a fix. We'll let you know what we hear.
[Update: EA tells us that the custom playbook issue was fixed by the recently released Title Update 2. The other issues are still under investigation.]