What? This has nothing to do with bugs in the code that would've affected the original author's ability to run the original experiments described in the paper. The user I replied to is talking about things like hard-coded data paths and wanting to be able to run the code at the press of a button on any platform. The expectation for this level of cross-platform compatibility is difficult to achieve for engineering firms with millions to invest in making it work properly. He's mad that individual machine learning researchers don't always do a great job of making it happen for their cutting-edge research which was a difficult enough engineering task to get running on their machine.