pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4179-1701_Trip_to_Aberdeen_JC.ps) >>/Users/jc/w/tmp/Tune-4179-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/SCD/Book17/1701_Trip_to_Aberdeen_JC.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_41793.log 1403 Log file, useful mostly for debugging
Form_41794.log 0 Log file, useful mostly for debugging
Tune-4179-1701_Trip_to_Aberdeen_JC.abc 1021 ABC music file with the extracted tune(s)
Tune-4179-1701_Trip_to_Aberdeen_JC.ps 40404 PostScript
Tune-4179-1701_Trip_to_Aberdeen_JC.txt 1021 Plain-text file with the extracted tune(s)
Tune-4179-get.log 4733 Log file, useful mostly for debugging
Tune-41790-get.log 4062 Log file, useful mostly for debugging
Tune-41792-get.log 11917 Log file, useful mostly for debugging
Tune-41793-get.log 11893 Log file, useful mostly for debugging
Tune-41797-get.log 5672 Log file, useful mostly for debugging
Tune-41799-get.log 5641 Log file, useful mostly for debugging
These files should be available for 24 hours.