pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1162-1091_SEMINARY_QUICK-STEP.ps) >>/Users/jc/w/tmp/Tune-1162-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/BostonCollection/1091_SEMINARY_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
Tune-1162-1091_SEMINARY_QUICK-STEP.abc 1191 ABC music file with the extracted tune(s)
Tune-1162-1091_SEMINARY_QUICK-STEP.ps 39526 PostScript
Tune-1162-1091_SEMINARY_QUICK-STEP.txt 1191 Plain-text file with the extracted tune(s)
Tune-1162-get.log 6302 Log file, useful mostly for debugging
Tune-11620-get.log 1346 Log file, useful mostly for debugging
Tune-11626-get.log 1418 Log file, useful mostly for debugging
These files should be available for 24 hours.