Classifying errors in a component-based system is challenging. Components, and the systems that rely on them, can fail in myriad, unpredictable ways. It is nonetheless a challenge that should be addressed because component-based, software-driven systems are increasingly used for safety-critical applications. In this podcast, SEI researchers Peter Feiler and Sam Procter present the Architecture Analysis and Design Language (AADL) EMV2 Error Library, which is an established taxonomy that draws on a broad range of previous work in classifying system errors.