pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5409-QueensWelcome.ps) >>/Users/jc/w/tmp/Tune-5409-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Scotland/QueensWelcome.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
Form_5409.log 901 Log file, useful mostly for debugging
Form_54092.log 900 Log file, useful mostly for debugging
Tune-5409-QueensWelcome.abc 840 ABC music file with the extracted tune(s)
Tune-5409-QueensWelcome.ps 34634 PostScript
Tune-5409-QueensWelcome.txt 840 Plain-text file with the extracted tune(s)
Tune-5409-get.log 5764 Log file, useful mostly for debugging
Tune-54096-get.log 3482 Log file, useful mostly for debugging
These files should be available for 24 hours.