pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7565-national.ps) >>/Users/jc/w/tmp/Tune-7565-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/home.primus.com.au/timbarker/music/abc/national.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_75659.log 264789 Log file, useful mostly for debugging
Form_75650.log 888 Log file, useful mostly for debugging
Form_75651.log 841 Log file, useful mostly for debugging
Form_75656.log 852 Log file, useful mostly for debugging
Form_75657.log 872 Log file, useful mostly for debugging
Tune-7565-get.log 4510 Log file, useful mostly for debugging
Tune-7565-national.abc 342 ABC music file with the extracted tune(s)
Tune-7565-national.ps 37688 PostScript
Tune-7565-national.txt 342 Plain-text file with the extracted tune(s)
Tune-75650-get.log 3676 Log file, useful mostly for debugging
Tune-75659-Give_Ear_to_a_Frolicsome_Ditty.abc 64151 ABC music file with the extracted tune(s)
Tune-75659-Give_Ear_to_a_Frolicsome_Ditty.txt 64151 Plain-text file with the extracted tune(s)
Tune-75659-get.log 3439 Log file, useful mostly for debugging
These files should be available for 24 hours.