pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-48790-2016_03_01_archive.ps) >>/Users/jc/w/tmp/Tune-48790-get.log 2>&1" returned status 256
http://lesters-tune-a-day.blogspot.co.uk/2016_03_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-48790-2016_03_01_archive.abc 207 ABC music file with the extracted tune(s)
Tune-48790-2016_03_01_archive.ps 34562 PostScript
Tune-48790-2016_03_01_archive.txt 207 Plain-text file with the extracted tune(s)
Tune-48790-get.log 4457 Log file, useful mostly for debugging
These files should be available for 24 hours.