Sigma Graphics window freezes.
Error message when logging off from Sigma : Sigma must be shutdown by using the Operators Panel Only.
Sigma 4.05 SEB
When a User logs off from Sigma, an dialogue box appears.
If not accepted or "OK" then the dialogue box disappears and the graphic window freezes.
Any further attempts to "OK" the dialogue box when logging on or logging off does not have any effect.
Go to: System Setup > General > Graphics
The startup graphic has been set to 0 (none). Change the startup graphic to any number other than 0, preferably to an overview graphic. If one does not exist, then create a graphic.