pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-89693-1109-Glasgow_Flourish-AL.ps) >>/Users/jc/w/tmp/Tune-89693-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/SCD/Book11/1109-Glasgow_Flourish-AL.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_89693.log 135547 Log file, useful mostly for debugging
Form_89693.log 844 Log file, useful mostly for debugging
Tune-89693-1109-Glasgow_Flourish-AL.abc 551 ABC music file with the extracted tune(s)
Tune-89693-1109-Glasgow_Flourish-AL.ps 39013 PostScript
Tune-89693-1109-Glasgow_Flourish-AL.txt 551 Plain-text file with the extracted tune(s)
Tune-89693-get.log 4654 Log file, useful mostly for debugging
These files should be available for 24 hours.