pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-70794-3134-Kindness_for_ever_Mair.ps) >>/Users/jc/w/tmp/Tune-70794-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/3134-Kindness_for_ever_Mair.abc1.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_70794.log 1276260 Log file, useful mostly for debugging
Tune-70794-3134-Kindness_for_ever_Mair.abc 1008 ABC music file with the extracted tune(s)
Tune-70794-3134-Kindness_for_ever_Mair.ps 38949 PostScript
Tune-70794-3134-Kindness_for_ever_Mair.txt 1008 Plain-text file with the extracted tune(s)
Tune-70794-get.log 4855 Log file, useful mostly for debugging
These files should be available for 24 hours.