I'm been running the ECO check on my PCB layout in PADS Layout VX.2.3. Its been working fine last few weeks but today I got the "ECOGEN failed" message below while running ECO comparison. I made the ECO failed by changing some connections in my netlist but didn't give me any errors. I closed the application, reboot computer, save in different name but seems none of those help. could you please give me some advices or help me how to fix it?
Thank you so much!