pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7059-tb05.ps) >>/Users/jc/w/tmp/Tune-7059-get.log 2>&1" returned status 256
http://nigelgatherer.com/tunes/abc/tb05.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_70595.log 133732 Log file, useful mostly for debugging
Coll_70596.log 267609 Log file, useful mostly for debugging
Form_70592.log 0 Log file, useful mostly for debugging
Form_70598.log 868 Log file, useful mostly for debugging
Tune-7059-get.log 4163 Log file, useful mostly for debugging
Tune-7059-tb05.abc 328 ABC music file with the extracted tune(s)
Tune-7059-tb05.ps 35768 PostScript
Tune-7059-tb05.txt 328 Plain-text file with the extracted tune(s)
Tune-70595-get.log 3164 Log file, useful mostly for debugging
Tune-70597-get.log 7945 Log file, useful mostly for debugging
These files should be available for 24 hours.