pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-14181-WhelyHouse_PLFD1702_503.ps) >>/Users/jc/w/tmp/Tune-14181-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/WhelyHouse_PLFD1702_503.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-14181-20442-Canadian_Boat_Song-V1.abc 597 ABC music file with the extracted tune(s)
Tune-14181-20442-Canadian_Boat_Song-V1.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-14181-20442-Canadian_Boat_Song-V1.ps 34860 PostScript
Tune-14181-20442-Canadian_Boat_Song-V1.txt 597 Plain-text file with the extracted tune(s)
Tune-14181-WhelyHouse_PLFD1702_503.abc 354 ABC music file with the extracted tune(s)
Tune-14181-WhelyHouse_PLFD1702_503.ps 33556 PostScript
Tune-14181-WhelyHouse_PLFD1702_503.txt 354 Plain-text file with the extracted tune(s)
Tune-14181-get.log 10386 Log file, useful mostly for debugging
These files should be available for 24 hours.