Which highly anticipated mathematics education product was recalled within 3 months of its 2016 launch due to fundamental algorithmic errors in its problem-generation engine?

In the world of mathematics education, product launches can make or break a company's reputation. Software tools, manipulatives, and curriculum packages represent huge investments for both developers and educational institutions. Not every product succeeds, despite extensive research and development. This poll tests your knowledge of a notable mathematics education product failure that changed how educational tools are developed and marketed.

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Pearson's MathXpert Dynamic Solver
McGraw Hill's Adaptive Mathematics Platform
Texas Instruments' Neural Math Assistant
Wolfram's Classroom Analytics Suite