pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-58274-1021_HENNESSEYS_QUICK-STEP.ps) >>/Users/jc/w/tmp/Tune-58274-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/BostonCollection/1021_HENNESSEYS_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-58274-1021_HENNESSEYS_QUICK-STEP.abc 1215 ABC music file with the extracted tune(s)
Tune-58274-1021_HENNESSEYS_QUICK-STEP.ps 44067 PostScript
Tune-58274-1021_HENNESSEYS_QUICK-STEP.txt 1215 Plain-text file with the extracted tune(s)
Tune-58274-Thompson_V4_1773-1780_PD.abc 163 ABC music file with the extracted tune(s)
Tune-58274-Thompson_V4_1773-1780_PD.pdf 2217 Portable Data Format
Tune-58274-Thompson_V4_1773-1780_PD.ps 6 PostScript
Tune-58274-Thompson_V4_1773-1780_PD.txt 163 Plain-text file with the extracted tune(s)
Tune-58274-get.log 13784 Log file, useful mostly for debugging
These files should be available for 24 hours.