what modeling program do i need for PA?

so i can finsh my WWII Unit skin pack for PA

I believe blender i the one they put on the guides

i tryed blender the .blend to .papa converter does not work

It does work, but it's very picky. I am willing to be that you overlooked something.

i did everything that is needed like with my B-17 model i did everything imported it to .papa and error

You must have missed something. It's worked for me and it's worked for other people. Perhaps it would be better to say something along the lines of "I have this model that doesn't want to export, can anyone help me?"

Or perhaps it would be better to have a quality SDK released by Uber to support modders trying to add models.