Can't switch trading ships? (stuck at 300 food rations delivery)

[astaldion]

Hey guys, i got a small problem. I gotta deliver these 300 food rations at devries, so after getting frustrated by the fuel cell problem, i decided to install the "nofuelcells" Mod and told my taranis and my const. ship to jump to devries. Now i am at the desired trade port at the space station and can't sell my food rations, as i can got the taranis selected for trading and the "5" and "6" arrow buttons are greyed out.

Any idea what to do? I already told the taranis to jump to a different system, but i am still stuck with the taranis (const. ship is sitting right next to me)...