GDB cannot find a valid python installation?

[Davita]

Hi guys.
I have a strange problem with QtCreator. I can't start debugging for newly created projects. Old projects works fine.
I get a message saying "The GDB installed at 'project path' cannot find a valid python installation in its subdirectories. You may set environment variable PYTHONPATH to point to your installation"
Anyone knows what's wrong? How to fix this issue?

Thanks :)