Scale changing from Vizard 3 to 5
 

I created a simple scene in Vizard 3: characters from Vizard Complete Characters standing in a room (COLLADA file exported from SketchUp).

When I run the script in Vizard 5 (on a separate computer), the characters have not changed but the room has been scaled down to be significantly smaller.

Nothing has changed (same script, same models), where's the discrepancy?

The 'Collada models automatically scaled' section in the Vizard 5 upgrade guide explains this and how to disable the scaling.