Ola! Sorry I have to answer in english. Just to recap in english: You are asking about the old PAP – you are having problems loading or saving anything, even the tutorial walkcycle will not load.
That is strange – it should load and save without any problems. I haven’t touched PAP since we stopped developing it almost 2 decades ago. 🙂 So I have no idea on how to help I’m afraid. All I can say is that it SHOULD work. However, PAP was obviously not made with todays modern computers in mind. So maybe you have stumbled across some basic problem that could have turned up with the latest update of Windows? Another possibility is of course that something could have went wrong when installing?
Sorry I can’t help you better. My best advise is to use Animation Paper (latest alpha version). This is both much better and much easier to learn – everything just works better and is based on modern conventions. And it is free as well. I see no reason AT ALL to use the old antiquated version! 🙂