pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5387-DumfriesLasses_D.ps) >>/Users/jc/w/tmp/Tune-5387-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/SCD/misc/DumfriesLasses_D.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_53879.log 285166 Log file, useful mostly for debugging
Tune-5387-DumfriesLasses_D.abc 474 ABC music file with the extracted tune(s)
Tune-5387-DumfriesLasses_D.ps 33804 PostScript
Tune-5387-DumfriesLasses_D.txt 474 Plain-text file with the extracted tune(s)
Tune-5387-get.log 4957 Log file, useful mostly for debugging
Tune-53871-get.log 4138 Log file, useful mostly for debugging
Tune-53874-get.log 3597919 Log file, useful mostly for debugging
Tune-53874-tunebook.abc 0 ABC music file with the extracted tune(s)
Tune-53874-tunebook.ps 6 PostScript
Tune-53874-tunebook.txt 0 Plain-text file with the extracted tune(s)
Tune-53878-get.log 3668197 Log file, useful mostly for debugging
These files should be available for 24 hours.