http://imageshack.com/a/img691/5256/l3k5.png and yes i know that WWII tank is bad its my first tank :/
the screen shot shows the error when i tryed to convert it to a pa.pa what i did was took the laser tank model removed it and replaced it with the WWII tank model put the bones where they need save as .blend convert to pa.pa aaaaand...that happen...
Ah oops, I completely missed that. I feel silly now. Sorry. Anyway, somebody seems to have asked that exact same question yesterday. See this post. tylerseacrest replied with a solution, though I don't quite understand it myself, but you might have better luck.
I ran some tests and it seems I made an error in my solution. I said you could parent using armature deform or any of the sub-options. I was wrong, you have to use one of the sub-options as the PAPA exporter expects there to be vertex groups on the model.
Meaning that you want to parent the model to the armature using the With Empty Groups, With Envelope Weights, or With Automatic Weights option. Parent is ctrl-p with the model selected (red-0range outline) and the armature active (bright orange outline). The concept is called skinning and basically its defining how your armature should effect your model. A tutorial on it can be found here. I recommend going through the whole thing, including part 1, but for skinning specifically, scroll down to the skinning header.
