pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-91757-tradtunes4.ps) >>/Users/jc/w/tmp/Tune-91757-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/kennaquhair.com/tradtunes4.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-91757-get.log 4455 Log file, useful mostly for debugging
Tune-91757-tradtunes4.abc 269 ABC music file with the extracted tune(s)
Tune-91757-tradtunes4.ps 33860 PostScript
Tune-91757-tradtunes4.txt 269 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.