I'll double check that the error isn't something more serious but a reason for not allowing people to delete Technical Support topics is because the topic may help someone else with a similar issue issue in the future. More solved topics means less repeated questions and more pages to reference when someone is unable to find a topic for themselves.
If you feel that a topic should be removed, I can remove it for you but it will affect people's post counts and nobody really benefits from my doing so. A better solution would be to go through and mark all the topics of yours that have gotten solved so that people have an easier time in finding solutions (you would really be doing a favor because I would inevitably be doing it myself).
