pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-53019-RobertPurdie_TomThumb.ps) >>/Users/jc/w/tmp/Tune-53019-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/RobertPurdie/TomThumb/RobertPurdie_TomThumb.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_53019.log 261851 Log file, useful mostly for debugging
Tune-53019-RobertPurdie_TomThumb.abc 5666 ABC music file with the extracted tune(s)
Tune-53019-RobertPurdie_TomThumb.ps 67335 PostScript
Tune-53019-RobertPurdie_TomThumb.txt 5666 Plain-text file with the extracted tune(s)
Tune-53019-get.log 17287 Log file, useful mostly for debugging
These files should be available for 24 hours.