Skype crashes when you answer a call in Debian-like Linux operating system? But you can initiate call without crashes at the same time? Install package libasound2-plugins if so
sudo apt-get install libasound2-plugins:i386
Don't ask why it couldn't be installed as dependency. And why it causes such a strange behaviour. Frankly, I don't know. But this solution works fine for me. Hope it will help you too.