whats the problem?
i want to send to shapeshift
did you mess with permissions? like changing passwords or changing how you log-in?
---------- then you probably are missing the correct permission for memo, might need to change it or use an account where you have full permissions.
do you have enough bts to pay the fee?
---------- fee is higher when you include a memo, make sure not to use 100%
are you paying a fee in a token instead of bts?
---------- trying paying the fee in bts, possible some token owners fee pool is temporarily empty
helpful to include error you see when sending and even what console says during it (ctrl-shift-i in chrome) - feel free to blur out anything private