This information pertains to the original LabQuest.

If you have LabQuest 2, see this article.

Connecting and disconnecting sensors quickly may cause LabQuest App 1.0 to crash if you do not pause a couple of seconds between each sensor. This problem has been fixed in the new release of the LabQuest App, which is available as a free download at:
http://www.vernier.com/labquest/updates/