pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-52678-all_tunes_playback.ps) >>/Users/jc/w/tmp/Tune-52678-get.log 2>&1" returned status 256
http://dickatlee.com/music/dick/abc/all_tunes_playback.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-52678-all_tunes_playback.abc 619 ABC music file with the extracted tune(s)
Tune-52678-all_tunes_playback.ps 38294 PostScript
Tune-52678-all_tunes_playback.txt 619 Plain-text file with the extracted tune(s)
Tune-52678-get.log 4549 Log file, useful mostly for debugging
These files should be available for 24 hours.