pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-502-JeffersonLiberty_BlackWatch_Medley.ps) >>/Users/jc/w/tmp/Tune-502-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/session/SudburyAncients/_/JeffersonLiberty_BlackWatch_Medley.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_5024.log 0 Log file, useful mostly for debugging
Coll_50254.log 286312 Log file, useful mostly for debugging
Form_50220.log 911 Log file, useful mostly for debugging
Form_50223.log 710 Log file, useful mostly for debugging
Form_50267.log 0 Log file, useful mostly for debugging
Form_50271.log 920 Log file, useful mostly for debugging
Form_50276.log 881 Log file, useful mostly for debugging
Form_50287.log 935 Log file, useful mostly for debugging
Tune-502-JeffersonLiberty_BlackWatch_Medley.abc 516 ABC music file with the extracted tune(s)
Tune-502-JeffersonLiberty_BlackWatch_Medley.ps 34388 PostScript
Tune-502-JeffersonLiberty_BlackWatch_Medley.txt 516 Plain-text file with the extracted tune(s)
Tune-502-get.log 6308 Log file, useful mostly for debugging
Tune-50200-get.log 3075 Log file, useful mostly for debugging
Tune-50228-get.log 1196 Log file, useful mostly for debugging
Tune-50228-mount.abc 0 ABC music file with the extracted tune(s)
Tune-5023-DustyBobsJ.abc 0 ABC music file with the extracted tune(s)
Tune-5023-DustyBobsJ.ps 0 PostScript
Tune-5023-DustyBobsJ.txt 0 Plain-text file with the extracted tune(s)
Tune-5023-get.log 0 Log file, useful mostly for debugging
Tune-50239-get.log 323 Log file, useful mostly for debugging
Tune-50249-get.log 0 Log file, useful mostly for debugging
Tune-50254-get.log 2399 Log file, useful mostly for debugging
These files should be available for 24 hours.