pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-73128-152_the_Friendly_Visit-Eb-32-2.ps) >>/Users/jc/w/tmp/Tune-73128-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/IgnatiusSancho/MCCD/152_the_Friendly_Visit-Eb-32-2.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-73128-152_the_Friendly_Visit-Eb-32-2.abc 1022 ABC music file with the extracted tune(s)
Tune-73128-152_the_Friendly_Visit-Eb-32-2.ps 36753 PostScript
Tune-73128-152_the_Friendly_Visit-Eb-32-2.txt 1022 Plain-text file with the extracted tune(s)
Tune-73128-get.log 4854 Log file, useful mostly for debugging
These files should be available for 24 hours.