pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1954-PresidentGarfieldsH_G4.ps) >>/Users/jc/w/tmp/Tune-1954-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Contra/hornpipe/PresidentGarfieldsH_G4.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
Coll_19544.log 133127 Log file, useful mostly for debugging
Form_19544.log 849 Log file, useful mostly for debugging
Form_19546.log 840 Log file, useful mostly for debugging
Form_19547.log 821 Log file, useful mostly for debugging
Tune-1954-PresidentGarfieldsH_G4.abc 451 ABC music file with the extracted tune(s)
Tune-1954-PresidentGarfieldsH_G4.ps 35744 PostScript
Tune-1954-PresidentGarfieldsH_G4.txt 451 Plain-text file with the extracted tune(s)
Tune-1954-get.log 4692 Log file, useful mostly for debugging
Tune-19541-get.log 3092 Log file, useful mostly for debugging
Tune-19543-get.log 2928 Log file, useful mostly for debugging
Tune-19548-get.log 6257 Log file, useful mostly for debugging
These files should be available for 24 hours.