pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4956-Belfast_Almanac_1.ps) >>/Users/jc/w/tmp/Tune-4956-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/kirby98.fsnet.co.uk/be/Belfast_Almanac_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
Find_4956.log 1482 Log file, useful mostly for debugging
Form_49560.log 836 Log file, useful mostly for debugging
Form_49564.log 833 Log file, useful mostly for debugging
Tune-4956-Belfast_Almanac_1.abc 387 ABC music file with the extracted tune(s)
Tune-4956-Belfast_Almanac_1.ps 36632 PostScript
Tune-4956-Belfast_Almanac_1.txt 387 Plain-text file with the extracted tune(s)
Tune-4956-get.log 4561 Log file, useful mostly for debugging
Tune-49564-get.log 1391 Log file, useful mostly for debugging
Tune-49568-get.log 3137 Log file, useful mostly for debugging
Tune-49569-get.log 1950 Log file, useful mostly for debugging
These files should be available for 24 hours.