seat plans are not available on EF within T-24hrs
the flight's not full though: J5 C4 D0 R0 I4 Y9 B3 H0 K0 M0 L0 V0 N0 Q0 O0 S8 G6
what does the error message say - unavailable? need more ticket details?
ps - as a BA Gold, did you not pre-assign a seat, such as 1C?