pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-67834-Grocer.ps) >>/Users/jc/w/tmp/Tune-67834-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/abc/Scotland/reel/Grocer.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Form_67834.log 935 Log file, useful mostly for debugging
Tune-67834-Grocer.abc 564 ABC music file with the extracted tune(s)
Tune-67834-Grocer.ps 35613 PostScript
Tune-67834-Grocer.txt 564 Plain-text file with the extracted tune(s)
Tune-67834-get.log 4359 Log file, useful mostly for debugging
These files should be available for 24 hours.