pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2727-193_MissStevensonsStrathspey.ps) >>/Users/jc/w/tmp/Tune-2727-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Pringle/193_MissStevensonsStrathspey.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_27273.log 1764250 Log file, useful mostly for debugging
Coll_27274.log 277810 Log file, useful mostly for debugging
Coll_27278.log 458410 Log file, useful mostly for debugging
Coll_27279.log 280611 Log file, useful mostly for debugging
Tune-2727-193_MissStevensonsStrathspey.abc 778 ABC music file with the extracted tune(s)
Tune-2727-193_MissStevensonsStrathspey.ps 37671 PostScript
Tune-2727-193_MissStevensonsStrathspey.txt 778 Plain-text file with the extracted tune(s)
Tune-2727-get.log 4880 Log file, useful mostly for debugging
Tune-27270-5183_a_Sky_Dance.abc 507 ABC music file with the extracted tune(s)
Tune-27270-5183_a_Sky_Dance.pdf 8984 Portable Data Format
Tune-27270-5183_a_Sky_Dance.ps 32684 PostScript
Tune-27270-5183_a_Sky_Dance.txt 507 Plain-text file with the extracted tune(s)
Tune-27270-get.log 10522 Log file, useful mostly for debugging
These files should be available for 24 hours.