pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5989-3241_Ain_Kind_Dearie.ps) >>/Users/jc/w/tmp/Tune-5989-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/3241_Ain_Kind_Dearie.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_59898.log 139578 Log file, useful mostly for debugging
Coll_59899.log 1325436 Log file, useful mostly for debugging
Form_5989.log 880 Log file, useful mostly for debugging
Tune-5989-3241_Ain_Kind_Dearie.abc 690 ABC music file with the extracted tune(s)
Tune-5989-3241_Ain_Kind_Dearie.ps 37367 PostScript
Tune-5989-3241_Ain_Kind_Dearie.txt 690 Plain-text file with the extracted tune(s)
Tune-5989-get.log 4635 Log file, useful mostly for debugging
Tune-59890-get.log 84445 Log file, useful mostly for debugging
Tune-59891-get.log 3909 Log file, useful mostly for debugging
Tune-59893-get.log 3962 Log file, useful mostly for debugging
Tune-59898-get.log 3880 Log file, useful mostly for debugging
These files should be available for 24 hours.