It's always the same number that pops up which means we always can enter the same code; the number never changes and the original access number we received always works to open up MediaLab. We did have to go through an issue in the past with the number changing every time we opened it but followed directions listed on these boards (thanks everyone!) to appropriately grant administrator access.

It's really an odd problem as we've never run into on any of the other computers we use! Do you think a removal and re-install might be worth the effort?