pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-29619-10511_LORD_ROTHES_STRATHSPEY.ps) >>/Users/jc/w/tmp/Tune-29619-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Kohlers/10511_LORD_ROTHES_STRATHSPEY.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-29619-10511_LORD_ROTHES_STRATHSPEY.abc 829 ABC music file with the extracted tune(s)
Tune-29619-10511_LORD_ROTHES_STRATHSPEY.ps 40272 PostScript
Tune-29619-10511_LORD_ROTHES_STRATHSPEY.txt 829 Plain-text file with the extracted tune(s)
Tune-29619-get.log 26994 Log file, useful mostly for debugging
Tune-29619-snoa.abc 176 ABC music file with the extracted tune(s)
Tune-29619-snoa.txt 176 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.