pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-20143-2015_05_01_archive.ps) >>/Users/jc/w/tmp/Tune-20143-get.log 2>&1" returned status 256
http://lesters-tune-a-day.blogspot.co.uk/2015_05_01_archive.html

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-20143-2015_05_01_archive.abc 205 ABC music file with the extracted tune(s)
Tune-20143-2015_05_01_archive.ps 33528 PostScript
Tune-20143-2015_05_01_archive.txt 205 Plain-text file with the extracted tune(s)
Tune-20143-get.log 11730 Log file, useful mostly for debugging
These files should be available for 24 hours.