Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Ruff on Nintendogs

I came to this review area as I was hunting for a "cure" to my son's Nintendogs problem. Thought I would just post a warning NOT to use Action Replay on Nintendogs. It has corrupted his game, and not only did he lose all his dogs and accessories, but it's a bit like Groundhog Day in that it won't save anything now. There are many postings about this problem on the website. He can acquire and train new dogs but when he shuts down, he has to start all over. We have used it with other DS games without a problem.