pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5305-PlanxtyFannyPowers_A.ps) >>/Users/jc/w/tmp/Tune-5305-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/program/waltz/PlanxtyFannyPowers_A.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
Tune-5305-PlanxtyFannyPowers_A.abc 748 ABC music file with the extracted tune(s)
Tune-5305-PlanxtyFannyPowers_A.ps 34979 PostScript
Tune-5305-PlanxtyFannyPowers_A.txt 748 Plain-text file with the extracted tune(s)
Tune-5305-get.log 5278 Log file, useful mostly for debugging
Tune-53050-get.log 5026 Log file, useful mostly for debugging
Tune-53053-DickGossipsR2.abc 845 ABC music file with the extracted tune(s)
Tune-53053-DickGossipsR2.txt 845 Plain-text file with the extracted tune(s)
Tune-53053-get.log 3824 Log file, useful mostly for debugging
These files should be available for 24 hours.