Allegro nc route not lining up

[jeremyz]

nc route not lining up

I created my PCB using Allegro, and tried to view the gerber files in GC-Prevue, but the ncroute file isn't lining up with the rest of the artwork. How can I get it to line up properly?[/img]

 

[lhademmor]

From time to time GC preview and another tool do some upscure thing, thus we ended up using CAM350.

The problem is how to use gerber as check if the gerber viewer is faulty ?

I uploaded an image, not be a teacher, but do try avoid sharp entries as eching could result in a brokken line.