pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2756-HalloweenReels.ps) >>/Users/jc/w/tmp/Tune-2756-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Scotland/HalloweenReels.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
Coll_27561.log 139782 Log file, useful mostly for debugging
Coll_27566.log 96703 Log file, useful mostly for debugging
Form_27560.log 756 Log file, useful mostly for debugging
Tune-2756-HalloweenReels.abc 0 ABC music file with the extracted tune(s)
Tune-2756-HalloweenReels.ps 0 PostScript
Tune-2756-HalloweenReels.txt 0 Plain-text file with the extracted tune(s)
Tune-2756-get.log 0 Log file, useful mostly for debugging
Tune-27562-get.log 4571 Log file, useful mostly for debugging
Tune-27568-get.log 1372 Log file, useful mostly for debugging
These files should be available for 24 hours.