pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-16351-ng-reels.ps) >>/Users/jc/w/tmp/Tune-16351-get.log 2>&1" returned status 256
http://www.alan-ng.net/irish/abc/ng-reels.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
Tune-16351-get.log 20812 Log file, useful mostly for debugging
Tune-16351-ng-reels.abc 761 ABC music file with the extracted tune(s)
Tune-16351-ng-reels.ps 38504 PostScript
Tune-16351-ng-reels.txt 761 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.