pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1994-2381_Look_Behind_You.ps) >>/Users/jc/w/tmp/Tune-1994-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/2381_Look_Behind_You.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_19942.log 1297336 Log file, useful mostly for debugging
Coll_19943.log 1197580 Log file, useful mostly for debugging
Coll_19948.log 1432216 Log file, useful mostly for debugging
Tune-1994-2381_Look_Behind_You.abc 671 ABC music file with the extracted tune(s)
Tune-1994-2381_Look_Behind_You.ps 35873 PostScript
Tune-1994-2381_Look_Behind_You.txt 671 Plain-text file with the extracted tune(s)
Tune-1994-get.log 4629 Log file, useful mostly for debugging
Tune-19942-get.log 5149 Log file, useful mostly for debugging
These files should be available for 24 hours.