pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9027-MacArthur_Road_2-E-32-4.ps) >>/Users/jc/w/tmp/Tune-9027-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Scotland/reel/MacArthur_Road_2-E-32-4.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_90274.log 839 Log file, useful mostly for debugging
Form_90275.log 819 Log file, useful mostly for debugging
Tune-9027-MacArthur_Road_2-E-32-4.abc 693 ABC music file with the extracted tune(s)
Tune-9027-MacArthur_Road_2-E-32-4.ps 37935 PostScript
Tune-9027-MacArthur_Road_2-E-32-4.txt 693 Plain-text file with the extracted tune(s)
Tune-9027-get.log 5134 Log file, useful mostly for debugging
Tune-90277-Planxty_Fanny_Power-G-32-2.abc 751 ABC music file with the extracted tune(s)
Tune-90277-Planxty_Fanny_Power-G-32-2.ps 34919 PostScript
Tune-90277-Planxty_Fanny_Power-G-32-2.txt 751 Plain-text file with the extracted tune(s)
Tune-90277-get.log 5393 Log file, useful mostly for debugging
These files should be available for 24 hours.