pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9747-4362_Miss_Erskine_of_Alvas.ps) >>/Users/jc/w/tmp/Tune-9747-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/4362_Miss_Erskine_of_Alvas.abc

Error exit status 256; here are some files to check:

[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_97475.log 1293120 Log file, useful mostly for debugging
Tune-9747-4362_Miss_Erskine_of_Alvas.abc 796 ABC music file with the extracted tune(s)
Tune-9747-4362_Miss_Erskine_of_Alvas.ps 36843 PostScript
Tune-9747-4362_Miss_Erskine_of_Alvas.txt 796 Plain-text file with the extracted tune(s)
Tune-9747-get.log 4768 Log file, useful mostly for debugging
Tune-97471-get.log 5457 Log file, useful mostly for debugging
Tune-97473-get.log 183424 Log file, useful mostly for debugging
Tune-97474-4292_Hamilton_Races-001.svg 25049 Scalable Vector Graphics format
Tune-97474-4292_Hamilton_Races.abc 768 ABC music file with the extracted tune(s)
Tune-97474-4292_Hamilton_Races.txt 768 Plain-text file with the extracted tune(s)
Tune-97474-get.log 4241 Log file, useful mostly for debugging
Tune-97475-3142-the_Lone_Vale-001.svg 39598 Scalable Vector Graphics format
Tune-97475-3142-the_Lone_Vale.abc 1110 ABC music file with the extracted tune(s)
Tune-97475-3142-the_Lone_Vale.txt 1110 Plain-text file with the extracted tune(s)
Tune-97475-get.log 5717 Log file, useful mostly for debugging
Tune-97476-2011-Hei_Tuti_Teti-abc1.abc 920 ABC music file with the extracted tune(s)
Tune-97476-2011-Hei_Tuti_Teti-abc1.pdf 23268 Portable Data Format
Tune-97476-2011-Hei_Tuti_Teti-abc1.ps 39315 PostScript
Tune-97476-2011-Hei_Tuti_Teti-abc1.txt 920 Plain-text file with the extracted tune(s)
Tune-97476-get.log 9820 Log file, useful mostly for debugging
Tune-97479-get.log 1556 Log file, useful mostly for debugging
These files should be available for 24 hours.