pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5301-1770_Longman.ps) >>/Users/jc/w/tmp/Tune-5301-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/DftY/1770_Longman.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
Coll_53012.log 147042 Log file, useful mostly for debugging
Coll_53013.log 256329 Log file, useful mostly for debugging
Form_53013.log 505 Log file, useful mostly for debugging
Form_53019.log 812 Log file, useful mostly for debugging
Tune-5301-1770_Longman.abc 753 ABC music file with the extracted tune(s)
Tune-5301-1770_Longman.ps 33924 PostScript
Tune-5301-1770_Longman.txt 753 Plain-text file with the extracted tune(s)
Tune-5301-get.log 4245 Log file, useful mostly for debugging
Tune-53013-get.log 3920 Log file, useful mostly for debugging
These files should be available for 24 hours.