pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4164-Tug_Argan_Gap-D-64-4.ps) >>/Users/jc/w/tmp/Tune-4164-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/session/jig/Tug_Argan_Gap-D-64-4.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_41640.log 905 Log file, useful mostly for debugging
Tune-4164-Tug_Argan_Gap-D-64-4.abc 624 ABC music file with the extracted tune(s)
Tune-4164-Tug_Argan_Gap-D-64-4.ps 39305 PostScript
Tune-4164-Tug_Argan_Gap-D-64-4.txt 624 Plain-text file with the extracted tune(s)
Tune-4164-get.log 4891 Log file, useful mostly for debugging
These files should be available for 24 hours.