pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-52948-JohnsonVol6.ps) >>/Users/jc/w/tmp/Tune-52948-get.log 2>&1" returned status 256
http://www.cpartington.plus.com/Links/Johnson/JohnsonVol6(Feb15).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-52948-JohnsonVol6.abc 375 ABC music file with the extracted tune(s)
Tune-52948-JohnsonVol6.ps 33631 PostScript
Tune-52948-JohnsonVol6.txt 375 Plain-text file with the extracted tune(s)
Tune-52948-get.log 43912 Log file, useful mostly for debugging
These files should be available for 24 hours.