pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5435-PerrieWerrie_1.ps) >>/Users/jc/w/tmp/Tune-5435-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Shetland/PerrieWerrie_1.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
Form_54356.log 877 Log file, useful mostly for debugging
Tune-5435-PerrieWerrie_1.abc 447 ABC music file with the extracted tune(s)
Tune-5435-PerrieWerrie_1.ps 34932 PostScript
Tune-5435-PerrieWerrie_1.txt 447 Plain-text file with the extracted tune(s)
Tune-5435-get.log 7915 Log file, useful mostly for debugging
Tune-54356-get.log 0 Log file, useful mostly for debugging
Tune-54358-get.log 3045 Log file, useful mostly for debugging
These files should be available for 24 hours.