pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-88898-12161_An_thou_wert_my_ain_Thing.ps) >>/Users/jc/w/tmp/Tune-88898-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/JamesOswald/CPC/all/12161_An_thou_wert_my_ain_Thing.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_88898.log 878 Log file, useful mostly for debugging
Tune-88898-12161_An_thou_wert_my_ain_Thing.abc 928 ABC music file with the extracted tune(s)
Tune-88898-12161_An_thou_wert_my_ain_Thing.ps 45542 PostScript
Tune-88898-12161_An_thou_wert_my_ain_Thing.txt 928 Plain-text file with the extracted tune(s)
Tune-88898-get.log 5055 Log file, useful mostly for debugging
These files should be available for 24 hours.