pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5372-DunmoreKate_PLFD1698_375.ps) >>/Users/jc/w/tmp/Tune-5372-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/DunmoreKate_PLFD1698_375.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_5372.log 465410 Log file, useful mostly for debugging
Coll_53721.log 926619 Log file, useful mostly for debugging
Tune-5372-DunmoreKate_PLFD1698_375.abc 381 ABC music file with the extracted tune(s)
Tune-5372-DunmoreKate_PLFD1698_375.ps 34073 PostScript
Tune-5372-DunmoreKate_PLFD1698_375.txt 381 Plain-text file with the extracted tune(s)
Tune-5372-get.log 4758 Log file, useful mostly for debugging
Tune-53721-get.log 5088 Log file, useful mostly for debugging
Tune-53723-get.log 3910 Log file, useful mostly for debugging
These files should be available for 24 hours.