Mismatch: X:20 doesn't match requested X:21
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-64747-reelsU-Z.ps) >>/Users/jc/w/tmp/Tune-64747-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/perun.hscs.wmin.ac.uk/~jra/NMD/reelsU-Z.txt

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-64747-get.log 13982 Log file, useful mostly for debugging
Tune-64747-reelsU-Z.abc 549 ABC music file with the extracted tune(s)
Tune-64747-reelsU-Z.ps 35014 PostScript
Tune-64747-reelsU-Z.txt 549 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.