pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-20859-New_Pavement.ps) >>/Users/jc/w/tmp/Tune-20859-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Thompson/New_Pavement.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-20859-George_Meikle.abc 149 ABC music file with the extracted tune(s)
Tune-20859-George_Meikle.txt 149 Plain-text file with the extracted tune(s)
Tune-20859-New_Pavement.abc 435 ABC music file with the extracted tune(s)
Tune-20859-New_Pavement.ps 33684 PostScript
Tune-20859-New_Pavement.txt 435 Plain-text file with the extracted tune(s)
Tune-20859-get.log 7716 Log file, useful mostly for debugging
These files should be available for 24 hours.