MediaLab freezes, running on Vista

[jarvis24]

This is really useful information. I agree it certainly sounds like some kind of memory issue--especially if closing and restarting MediaLab allows for the "count" to reset. My only remaining question is whether this also depends on some specific content in the experiment (i.e., a 3-way OS x #Items x Content interaction) or a simple 2-way OS x #Items interaction. Without seeing the content of your questionnaires I can't say. But one way to tell would be to administer a 200 item questionnaire, with the most basic content possible--say 200 instruction items. I've attached such a sample que file. Would you mind running it on your system and see if the result is the same?