pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2978-Whitehall_1675_PLFD1_217_CP.ps) >>/Users/jc/w/tmp/Tune-2978-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/Whitehall_1675_PLFD1_217_CP.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_29789.log 911216 Log file, useful mostly for debugging
Tune-2978-Whitehall_1675_PLFD1_217_CP.abc 357 ABC music file with the extracted tune(s)
Tune-2978-Whitehall_1675_PLFD1_217_CP.ps 33283 PostScript
Tune-2978-Whitehall_1675_PLFD1_217_CP.txt 357 Plain-text file with the extracted tune(s)
Tune-2978-get.log 4871 Log file, useful mostly for debugging
Tune-29781-get.log 2814 Log file, useful mostly for debugging
Tune-29787-get.log 1407 Log file, useful mostly for debugging
Tune-29789-get.log 15241 Log file, useful mostly for debugging
These files should be available for 24 hours.