[SOLVED]AddPropForce problem :(

[DnALANGE]

I think you missed 1 IMPORTEND step.
Go to the editor again and make a MESH. MESH = SHAPES in the modeleditor - (TAB 6)
A mesh you have to make as close as possible as the entitie looks ( the bird )
And then add\connect the mesh to the bird.
Connect it is like this : click on the SHAPE -> go to Shape (on the tab on the right side) Then create body.
Then save again.
If you dont understand let us know we can explane better.
I'm having diner now, so sorry for the short explanation.
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Edit :
You should make also the BODY.
What i mean is there are like Body material \Mass \ Angular Damping \ Etc etc...
What you should do \ check is this for example.
Open a second MODEL EDITOR and open this : wood_box02.ent
You can find it in entities \ container.
Just copy what is there in the WOODEN box into your BIRD.
Except the BODY MATERIAL, make that ORGANIC, i am not sure what your bird is? wood\stone\organic...