pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-358-CPCvol1bk06-abc1.ps) >>/Users/jc/w/tmp/Tune-358-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/JamesOswald/CPC/CPCvol1/Book06/CPCvol1bk06-abc1.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_35869.log 253509 Log file, useful mostly for debugging
Find_35832.log 1419 Log file, useful mostly for debugging
Form_35803.log 829 Log file, useful mostly for debugging
Form_3581.log 750 Log file, useful mostly for debugging
Form_35838.log 824 Log file, useful mostly for debugging
Form_35840.log 872 Log file, useful mostly for debugging
Form_35844.log 895 Log file, useful mostly for debugging
Form_35879.log 836 Log file, useful mostly for debugging
Form_3588.log 830 Log file, useful mostly for debugging
Tune-358-CPCvol1bk06-abc1.abc 1322 ABC music file with the extracted tune(s)
Tune-358-CPCvol1bk06-abc1.ps 49886 PostScript
Tune-358-CPCvol1bk06-abc1.txt 1322 Plain-text file with the extracted tune(s)
Tune-358-get.log 4611 Log file, useful mostly for debugging
Tune-3580-get.log 3783 Log file, useful mostly for debugging
Tune-35803-get.log 7229 Log file, useful mostly for debugging
Tune-35809-get.log 4199 Log file, useful mostly for debugging
Tune-35821-get.log 3126 Log file, useful mostly for debugging
Tune-35823-get.log 4033 Log file, useful mostly for debugging
Tune-35836-get.log 1591 Log file, useful mostly for debugging
Tune-35849-get.log 3255 Log file, useful mostly for debugging
Tune-35856-get.log 3169 Log file, useful mostly for debugging
Tune-35859-get.log 4217 Log file, useful mostly for debugging
Tune-35864-get.log 1623 Log file, useful mostly for debugging
Tune-35869-get.log 4959 Log file, useful mostly for debugging
Tune-35870-get.log 4498 Log file, useful mostly for debugging
Tune-35885-get.log 4719 Log file, useful mostly for debugging
Tune-35894-get.log 2874 Log file, useful mostly for debugging
Tune-35895-get.log 20726 Log file, useful mostly for debugging
Tune-35896-get.log 1584 Log file, useful mostly for debugging
These files should be available for 24 hours.