pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7754-ByronStrathspey.ps) >>/Users/jc/w/tmp/Tune-7754-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Scotland/ByronStrathspey.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-7754-ByronStrathspey.abc 758 ABC music file with the extracted tune(s)
Tune-7754-ByronStrathspey.ps 38111 PostScript
Tune-7754-ByronStrathspey.txt 758 Plain-text file with the extracted tune(s)
Tune-7754-get.log 4553 Log file, useful mostly for debugging
Tune-77540-get.log 4319 Log file, useful mostly for debugging
Tune-77544-get.log 4091 Log file, useful mostly for debugging
Tune-77545-get.log 7149 Log file, useful mostly for debugging
Tune-77548-get.log 4073 Log file, useful mostly for debugging
These files should be available for 24 hours.