Unexpected Error - Error Code :-8 Memo can not be used with a taddr

Hey there
I would like to think im using Zcash4 win in the most basic terms, and had been using it trouble free for a few weeks, but this morning i got this error

"Unexpected Error Occured when sending Cash!

Please ensure that all Zcash daemon is running and parameters are correct, you may try again later…

Error response from wallet : error Code:-8
Error Message:
Memo can not be used with a taddr. It can only be used with a zaddr."

any help would be neat!

Cheers all