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Good day!
I encounter this problem after I installed my AutoCAD Mechanical 2013 Command: amcentline Unknown command "AMCENTLINE". Press F1 for help. the center line command is not working. Please find the attached file of this error and how to fix this.
Regards,
Eric
Hello Eric,
I cannot see the issue at my side.
Does it happen to only AMCENTLINE command or other mechanical commands?
I would suggest you first try to Reset Settings to default from start menu. If it doesn't help, you can try reinstall it from control panel.