pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-473-SallyHunterOfThurstonsJ.ps) >>/Users/jc/w/tmp/Tune-473-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Scotland/jig/SallyHunterOfThurstonsJ.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_47306.log 849 Log file, useful mostly for debugging
Form_47318.log 844 Log file, useful mostly for debugging
Form_47324.log 491 Log file, useful mostly for debugging
Form_47330.log 853 Log file, useful mostly for debugging
Form_47343.log 862 Log file, useful mostly for debugging
Tune-473-SallyHunterOfThurstonsJ.abc 629 ABC music file with the extracted tune(s)
Tune-473-SallyHunterOfThurstonsJ.ps 37337 PostScript
Tune-473-SallyHunterOfThurstonsJ.txt 629 Plain-text file with the extracted tune(s)
Tune-473-get.log 4811 Log file, useful mostly for debugging
Tune-47312-get.log 5424 Log file, useful mostly for debugging
Tune-47364-get.log 6239 Log file, useful mostly for debugging
Tune-47372-get.log 5243 Log file, useful mostly for debugging
Tune-47382-get.log 4568 Log file, useful mostly for debugging
These files should be available for 24 hours.