pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-53873-21142_Just_as_I_was_in_the_morning.ps) >>/Users/jc/w/tmp/Tune-53873-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/JamesOswald/CPC/CPCvol2/21142_Just_as_I_was_in_the_morning.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-53873-21142_Just_as_I_was_in_the_morning.abc 357 ABC music file with the extracted tune(s)
Tune-53873-21142_Just_as_I_was_in_the_morning.ps 33900 PostScript
Tune-53873-21142_Just_as_I_was_in_the_morning.txt 357 Plain-text file with the extracted tune(s)
Tune-53873-get.log 5050 Log file, useful mostly for debugging
These files should be available for 24 hours.