lamers:I have a simular problem but instead it says i am missing a asset "enemy.fbx" which IS in the models but there is two one called enemy.fbx and the other enemy.tga.
When i open the enemy.fbx just get lots of numbers and letters.
Don't use the .fbx extension when loading the model.
Content.Load<Model>(..."enemy.fbx"...) = WRONG
Content.Load<Model>(..."enemy"...) = The way to go
Also don't import the tga in your solution, just leave it in the content folder on your harddrive
If you're still having problems, make sure that the enemy.fbx is physically available in the contentfolder on your harddrive.