pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-53273-slurs.ps) >>/Users/jc/w/tmp/Tune-53273-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/JohnTreat/GftF/slurs.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-53273-20085_Princess_Royal.abc 784 ABC music file with the extracted tune(s)
Tune-53273-20085_Princess_Royal.pdf 15013 Portable Data Format
Tune-53273-20085_Princess_Royal.ps 35030 PostScript
Tune-53273-20085_Princess_Royal.txt 784 Plain-text file with the extracted tune(s)
Tune-53273-get.log 9838 Log file, useful mostly for debugging
Tune-53273-slurs.abc 30 ABC music file with the extracted tune(s)
Tune-53273-slurs.ps 6 PostScript
Tune-53273-slurs.txt 30 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.