pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-65394-WilliamClementMBE.ps) >>/Users/jc/w/tmp/Tune-65394-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/WilliamClementMBE.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_65394.log 284330 Log file, useful mostly for debugging
Tune-65394-N2K_shot-001.svg 60843 Scalable Vector Graphics format
Tune-65394-N2K_shot.abc 1808 ABC music file with the extracted tune(s)
Tune-65394-N2K_shot.txt 1808 Plain-text file with the extracted tune(s)
Tune-65394-WilliamClementMBE.abc 2200 ABC music file with the extracted tune(s)
Tune-65394-WilliamClementMBE.ps 56856 PostScript
Tune-65394-WilliamClementMBE.txt 2200 Plain-text file with the extracted tune(s)
Tune-65394-get.log 10393 Log file, useful mostly for debugging
These files should be available for 24 hours.