Thnaks for bringing to our attention the problem of the Camera Offset Controls flipping when you move to another tab. I will investigate this and get back to you.
The problem you have with the error message and crashing when you have a large number of objects is normally down to memory issues. When you exhaust your computers resources you will get the rror message thrown up.
There are many factors that can cause this, not just the face count so it is always best to save at regular intervals as you build a scene so you have something to go back to in the event of a crash.
You mention that you had four characters in your scene. If these were G2 characters and especially CloneCloth figures then this could be putting a strain on your computers resources in low memory situations. Making sure that no other applications are running at the same time can also help in these situations.
Peter EdwardsForum Moderator
iClone Daily Blog