pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5025-MacArthur_Road-E-32-5.ps) >>/Users/jc/w/tmp/Tune-5025-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Scotland/reel/MacArthur_Road-E-32-5.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_50250.log 890 Log file, useful mostly for debugging
Tune-5025-MacArthur_Road-E-32-5.abc 638 ABC music file with the extracted tune(s)
Tune-5025-MacArthur_Road-E-32-5.ps 37523 PostScript
Tune-5025-MacArthur_Road-E-32-5.txt 638 Plain-text file with the extracted tune(s)
Tune-5025-get.log 4940 Log file, useful mostly for debugging
These files should be available for 24 hours.