pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-84960-1041_LYNN_QUICK-STEP.ps) >>/Users/jc/w/tmp/Tune-84960-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/BostonCollection/1041_LYNN_QUICK-STEP.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Find_84960.log 1654 Log file, useful mostly for debugging
Tune-84960-1041_LYNN_QUICK-STEP.abc 1052 ABC music file with the extracted tune(s)
Tune-84960-1041_LYNN_QUICK-STEP.ps 40072 PostScript
Tune-84960-1041_LYNN_QUICK-STEP.txt 1052 Plain-text file with the extracted tune(s)
Tune-84960-get.log 4900 Log file, useful mostly for debugging
These files should be available for 24 hours.