pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2691-047-Hay-Making_SongV1.ps) >>/Users/jc/w/tmp/Tune-2691-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/EverydaySongBook/047-Hay-Making_SongV1.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Tune-2691-047-Hay-Making_SongV1.abc 1471 ABC music file with the extracted tune(s)
Tune-2691-047-Hay-Making_SongV1.ps 35992 PostScript
Tune-2691-047-Hay-Making_SongV1.txt 1471 Plain-text file with the extracted tune(s)
Tune-2691-get.log 4710 Log file, useful mostly for debugging
Tune-26913-MarlboroughThe_PLFD1709_526.abc 542 ABC music file with the extracted tune(s)
Tune-26913-MarlboroughThe_PLFD1709_526.pdf 22293 Portable Data Format
Tune-26913-MarlboroughThe_PLFD1709_526.ps 36660 PostScript
Tune-26913-MarlboroughThe_PLFD1709_526.txt 542 Plain-text file with the extracted tune(s)
Tune-26913-get.log 5839 Log file, useful mostly for debugging
These files should be available for 24 hours.