It's been a few months since Libgdx Cross-platform Game Development Cookbook came out. Quite a few things have happened since then in the Libgdx world, libraries are updated and some things break over time.
As promised, we have updated our samples repository to use the latest versions of Libgdx (1.5.5), Ashley (1.4.0), gdx-ai (1.5.0) and RoboVM (1.0.0) among others. Luckily enough, only a few changes were necessary to make everything work again.
I'm very pleased to see that, 5 months after the book came out, it's still as relevant as it was on launch day. Moreover, people seem to like it!