A look at the introduction to the support category might have shown a way:
If you need support using Mp3tag, you can help the community members that are about to support you in finding a solution or workaround to your problem, by following these simple guidelines.
esp. the part about programs to check files for errors .
Edit I checked this post as solution as the initial post cannot be the solution. But as the OP says that the problem is solved, the topic should also appear as solved.