pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2879-SheepShanksR.ps) >>/Users/jc/w/tmp/Tune-2879-get.log 2>&1" returned status 256
http://terrytraub.org/abc/SheepShanksR.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_2879.log 139782 Log file, useful mostly for debugging
Tune-2879-SheepShanksR.abc 418 ABC music file with the extracted tune(s)
Tune-2879-SheepShanksR.ps 35744 PostScript
Tune-2879-SheepShanksR.txt 418 Plain-text file with the extracted tune(s)
Tune-2879-get.log 7119 Log file, useful mostly for debugging
Tune-28793-get.log 8663 Log file, useful mostly for debugging
Tune-28794-get.log 6259 Log file, useful mostly for debugging
Tune-28797-get.log 7706 Log file, useful mostly for debugging
These files should be available for 24 hours.