pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9820-Rock_Valley_C.ps) >>/Users/jc/w/tmp/Tune-9820-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/jig/Rock_Valley_C.abc

Error exit status 256; here are some files to check:

[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Form_98200.log 909 Log file, useful mostly for debugging
Form_98203.log 823 Log file, useful mostly for debugging
Form_98206.log 811 Log file, useful mostly for debugging
Tune-9820-Rock_Valley_C.abc 366 ABC music file with the extracted tune(s)
Tune-9820-Rock_Valley_C.ps 34422 PostScript
Tune-9820-Rock_Valley_C.txt 366 Plain-text file with the extracted tune(s)
Tune-9820-get.log 4234 Log file, useful mostly for debugging
Tune-98200-get.log 3882 Log file, useful mostly for debugging
Tune-98201-BM3.abc 281 ABC music file with the extracted tune(s)
Tune-98201-BM3.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-98201-BM3.ps 33929 PostScript
Tune-98201-BM3.txt 281 Plain-text file with the extracted tune(s)
Tune-98201-get.log 5204 Log file, useful mostly for debugging
Tune-98202-get.log 3224 Log file, useful mostly for debugging
Tune-98209-get.log 4030 Log file, useful mostly for debugging
These files should be available for 24 hours.