pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-91595-Drunken_Piper-Am-32-5.ps) >>/Users/jc/w/tmp/Tune-91595-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/session/march/Drunken_Piper-Am-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
Tune-91595-Drunken_Piper-Am-32-5.abc 570 ABC music file with the extracted tune(s)
Tune-91595-Drunken_Piper-Am-32-5.ps 35722 PostScript
Tune-91595-Drunken_Piper-Am-32-5.txt 570 Plain-text file with the extracted tune(s)
Tune-91595-get.log 4428 Log file, useful mostly for debugging
These files should be available for 24 hours.