Issue while running code from Jupyter notebook

[gsmshsns]

In [19]: plot_filters(model.layers[0], 8, 4)
I get error: AttributeError: 'Conv2D' object has no attribute 'W'
Anybody else got same error?

I am using:
tensorflow==1.1.0rc0 Keras==2.0.2
Could version be a problem? What versions should be used?

Thanks.