IM 4.0.3, Windows XP Pro
The corner constraint tool ignores the 3 points I give it and selects one of its own points (which does not define a right angle). Why does it not accept the 3 points I give it?

Hello,
 
   Possible explanation I see:
- The cameras are not calibrated
- Some locators you try to use are not reconstructed in 3D (locator only set in one shot, or in shots that are not calibrated)
 
Hope it helps,
 
Stef