pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8091-Tug_Argan_Gap.ps) >>/Users/jc/w/tmp/Tune-8091-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/thisoldtractor.com/Tug_Argan_Gap.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_80914.log 0 Log file, useful mostly for debugging
Form_80914.log 906 Log file, useful mostly for debugging
Tune-8091-Tug_Argan_Gap.abc 897 ABC music file with the extracted tune(s)
Tune-8091-Tug_Argan_Gap.ps 43114 PostScript
Tune-8091-Tug_Argan_Gap.txt 897 Plain-text file with the extracted tune(s)
Tune-8091-get.log 4917 Log file, useful mostly for debugging
Tune-80910-get.log 6455 Log file, useful mostly for debugging
These files should be available for 24 hours.