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 SEI podcast, 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.