adam@adam-laptop:~/extras-m1/jtag-serial/gerber$ /home/adam/eda-tools/fab/prettygerbv -d usb_jtag.gbr usb_jtag all overview.png
Loading project _gvp...
main_open_project_from_filename():  Opening project = /home/adam/extras-m1/jtag-serial/gerber/_gvp
Loading project _gvp...
main_open_project_from_filename():  Opening project = /home/adam/extras-m1/jtag-serial/gerber/_gvp
convert: unable to open image `_tmp.png': No such file or directory @ blob.c/OpenBlob/2480.
convert: unable to open file `_tmp.png' @ png.c/ReadPNGImage/2917.
convert: missing an image filename `_back.png' @ convert.c/ConvertImageCommand/2838.
Loading project _gvp...
main_open_project_from_filename():  Opening project = /home/adam/extras-m1/jtag-serial/gerber/_gvp
montage: unable to open image `_front.png': No such file or directory @ blob.c/OpenBlob/2480.
montage: unable to open file `_front.png' @ png.c/ReadPNGImage/2917.
montage: unable to open image `_back.png': No such file or directory @ blob.c/OpenBlob/2480.
montage: unable to open file `_back.png' @ png.c/ReadPNGImage/2917.