FSX Gate Problem

[Knighjet]

I recently downloaded a POSKY airbus A-30-313 in Air Canada colours. The problem i am haveing with this plane is at the gate. When i am ready for push back i press shift+p but i get a message saying "this aircraft cannot be moved by the tug." So does anyone know how to fix this and how?

[IplayMTG]

not sure, it may just be to big, or to heavy.  or tthe aircrad=ft doesnt support it.  the default one for me works fine

[Knighjet]

there is no default A340 in FSX, but anyways i could always use reverse thrust to back out