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I found there was a post named "Create Artwork Error" posted last year, while there is some differences in my case.
My OS is windows7 32bits, Allegro PCB Design XL (Legacy), 16.6 S008(v16-6-112AD) [4/16/2013]
When I was trying to create gerber, this error happened.
//////////////////////////////////////////////////////Part of log/////////////////////////////////////////////////////////////////// APERTURES USED: --------------------------------------------------------- TYPE SIZE/NAME ROT MIRROR MODE --------------------------------------------------------- CIRCLE 0.01600 DARK CIRCLE 0.01800 DARK CIRCLE 0.02000 DARK CIRCLE 0.02200 DARK CIRCLE 0.02400 DARK CIRCLE 0.04000 DARK CIRCLE 0.04800 DARK CIRCLE 0.05200 DARK CIRCLE 0.05400 DARK CIRCLE 0.05600 DARK CIRCLE 0.06000 DARK CIRCLE 0.06300 DARK CIRCLE 0.06400 DARK CIRCLE 0.08700 DARK CIRCLE 0.11700 DARK CIRCLE 0.12100 DARK CIRCLE 0.15500 DARK SQUARE 0.04000 0.000 NO DARK SQUARE 0.04800 0.000 NO DARK SQUARE 0.05400 0.000 NO DARK SQUARE 0.05600 0.000 NO DARK SQUARE 0.06000 0.000 NO DARK SQUARE 0.06300 0.000 NO DARK SQUARE 0.06400 0.000 NO DARK SQUARE 0.12600 0.000 NO DARK RECTANGLE 0.01100 x 0.02900 0.000 NO DARK RECTANGLE 0.01100 x 0.02900 90.000 NO DARK RECTANGLE 0.01100 x 0.07000 0.000 NO DARK RECTANGLE 0.01100 x 0.07000 90.000 NO DARK RECTANGLE 0.01500 x 0.02700 0.000 NO DARK RECTANGLE 0.01600 x 0.07000 0.000 NO DARK RECTANGLE 0.01600 x 0.07000 90.000 NO DARK RECTANGLE 0.02500 x 0.08000 0.000 NO DARK RECTANGLE 0.02500 x 0.08000 90.000 NO DARK RECTANGLE 0.03000 x 0.04800 0.000 NO DARK RECTANGLE 0.03300 x 0.02200 0.000 NO DARK RECTANGLE 0.03300 x 0.02200 90.000 NO DARK RECTANGLE 0.04000 x 0.03500 0.000 NO DARK RECTANGLE 0.04000 x 0.03500 90.000 NO DARK RECTANGLE 0.04000 x 0.11000 90.000 NO DARK RECTANGLE 0.04400 x 0.09600 90.000 NO DARK RECTANGLE 0.04600 x 0.05100 90.000 NO DARK RECTANGLE 0.04800 x 0.16700 0.000 NO DARK RECTANGLE 0.04800 x 0.16700 90.000 NO DARK RECTANGLE 0.05200 x 0.01600 0.000 NO DARK RECTANGLE 0.05200 x 0.01600 90.000 NO DARK RECTANGLE 0.07000 x 0.01100 90.000 NO DARK RECTANGLE 0.07000 x 0.01600 0.000 NO DARK RECTANGLE 0.07000 x 0.01600 90.000 NO DARK RECTANGLE 0.07000 x 0.06900 90.000 NO DARK RECTANGLE 0.07300 x 0.10800 0.000 NO DARK RECTANGLE 0.07300 x 0.10800 90.000 NO DARK RECTANGLE 0.07500 x 0.02500 0.000 NO DARK RECTANGLE 0.07500 x 0.07100 0.000 NO DARK RECTANGLE 0.07500 x 0.07100 90.000 NO DARK RECTANGLE 0.07500 x 0.08100 0.000 NO DARK RECTANGLE 0.07500 x 0.08100 90.000 NO DARK RECTANGLE 0.07900 x 0.09400 90.000 NO DARK RECTANGLE 0.10000 x 0.06500 0.000 NO DARK RECTANGLE 0.10000 x 0.06500 90.000 NO DARK RECTANGLE 0.10200 x 0.10400 0.000 NO DARK RECTANGLE 0.10200 x 0.10400 90.000 NO DARK RECTANGLE 0.10200 x 0.13600 0.000 NO DARK RECTANGLE 0.10200 x 0.13600 90.000 NO DARK RECTANGLE 0.13400 x 0.11000 0.000 NO DARK RECTANGLE 0.13400 x 0.11000 90.000 NO DARK RECTANGLE 0.42500 x 0.32800 0.000 NO DARK RECTANGLE 0.42500 x 0.32800 90.000 NO DARK OBLONG 0.04400 x 0.12700 0.000 NO DARK OBLONG 0.10700 x 0.06000 0.000 NO DARK FLASH SYM 20_DIAMOND 0.000 NO DARK FLASH SYM 20_DIAMOND 90.000 NO DARK (undefined) FLASH SYM 20_DIAMOND 180.000 NO DARK PAD SHAPE 20X20CHAMPER 270.000 NO DARK ERROR: aborting film - Undefined aperture symbol, cannot continue. See APERTURES USED table in this file for symbols to provide.////////////////////////////////////////////////////////////////////////////////////////////////////////
It seems I used a Flash Symbol, 20_DIAMOND, but Allegro can't find in library. I wanted to know which pad was using this flash symbol, and I can draw one myself. So I wen to Tools->Padstack->Modify Design Padstack.., I went through all these pads one by one, but I didn't find it. Is there any other way to find it, or I should set some parameters before generating gerber?
Any input would help.
In reply to oldmouldy:
Oldmouldy, thank you very much, I found it.