pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-84624-0831_KINLOCH_OF_KINLOCH.ps) >>/Users/jc/w/tmp/Tune-84624-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/BostonCollection/0831_KINLOCH_OF_KINLOCH.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Sess-84624.log 11849 Log file, useful mostly for debugging
Tune-84624-0831_KINLOCH_OF_KINLOCH.abc 574 ABC music file with the extracted tune(s)
Tune-84624-0831_KINLOCH_OF_KINLOCH.ps 34103 PostScript
Tune-84624-0831_KINLOCH_OF_KINLOCH.txt 574 Plain-text file with the extracted tune(s)
Tune-84624-get.log 9284 Log file, useful mostly for debugging
These files should be available for 24 hours.