After installing 1.2.03 on my two machines (Windows 10 and Windows 7) the program locks up with during rastering with a pop up windows appearing. Closing the pop-up only causes it to reappear and I have to stop the program using Task Manager. CPU usage is pegged at 50% (on a 2 CPU machine) and memory usages increases until exhausted.
I downgraded to 1.2.01 to solve the problem. But I think something is broken.
Cheers, Greg