This study investigates the nature of student errors in the context of problem solving and Dynamic Math Environments. This led to the development of the Problem Solving Action Identification Framework; this framework captures and defines all activities and errors associated with problem solving in a dynamic math environment. Found are three different types of errors: domain (mathematics, technology, and problem solving), process (interpretation, activity, and evaluation), and interaction (syntactic and semantic). Implications from this study address problem solving in general.