Vehicle is unknown

Hello everyone! I downloaded the Generic AAVVT v-tail plane airframe with Quad VTOL frame. However, vehicle information is unkown in Qground control. Also, I could not arm the vehicle. Then, i tried other frames and they all work fine.

Can you check that you have the latest version of QGroundControl with current firmware flashed? It sounds like your airframe metadata might be out of date.