pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9518-CPCvol2-abc2.ps) >>/Users/jc/w/tmp/Tune-9518-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/JamesOswald/CPC/CPCvol2-abc2.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_95180.log 63914 Log file, useful mostly for debugging
Coll_95182.log 272339 Log file, useful mostly for debugging
Coll_95188.log 68234 Log file, useful mostly for debugging
Form_95184.log 733 Log file, useful mostly for debugging
Sess-95187.log 9039 Log file, useful mostly for debugging
Tune-9518-CPCvol2-abc2.abc 777 ABC music file with the extracted tune(s)
Tune-9518-CPCvol2-abc2.ps 43832 PostScript
Tune-9518-CPCvol2-abc2.txt 777 Plain-text file with the extracted tune(s)
Tune-9518-get.log 4345 Log file, useful mostly for debugging
Tune-95180-get.log 12505 Log file, useful mostly for debugging
Tune-95181-get.log 2999 Log file, useful mostly for debugging
Tune-95182-get.log 1398 Log file, useful mostly for debugging
Tune-95183-get.log 5143 Log file, useful mostly for debugging
Tune-95186-get.log 7981 Log file, useful mostly for debugging
Tune-95187-get.log 3221 Log file, useful mostly for debugging
Tune-95188-5803.abc 11603 ABC music file with the extracted tune(s)
Tune-95188-5803.malt 14362 Musical Instrument Digital Interface, alternate name for midi format
Tune-95188-5803.mid 14362 Musical Instrument Digital interface, shortened name for midi format
Tune-95188-5803.midi 14362 Musical Instrument Digital Interface, electronic version of the tune(s)
Tune-95188-5803.txt 11603 Plain-text file with the extracted tune(s)
Tune-95188-get.log 10408 Log file, useful mostly for debugging
Tune-95189-get.log 156401 Log file, useful mostly for debugging
These files should be available for 24 hours.