pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-66950-HamishTheCarpenter.ps) >>/Users/jc/w/tmp/Tune-66950-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/abc/Scotland/reel/HamishTheCarpenter.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_66950.log 870 Log file, useful mostly for debugging
Tune-66950-HamishTheCarpenter.abc 475 ABC music file with the extracted tune(s)
Tune-66950-HamishTheCarpenter.ps 34338 PostScript
Tune-66950-HamishTheCarpenter.txt 475 Plain-text file with the extracted tune(s)
Tune-66950-get.log 5733 Log file, useful mostly for debugging
These files should be available for 24 hours.