pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8364-Ferry_Jig-G-32-2.ps) >>/Users/jc/w/tmp/Tune-8364-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/session/jig/Ferry_Jig-G-32-2.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_83641.log 615025 Log file, useful mostly for debugging
Coll_83649.log 312430 Log file, useful mostly for debugging
Tune-8364-Ferry_Jig-G-32-2.abc 507 ABC music file with the extracted tune(s)
Tune-8364-Ferry_Jig-G-32-2.ps 34236 PostScript
Tune-8364-Ferry_Jig-G-32-2.txt 507 Plain-text file with the extracted tune(s)
Tune-8364-get.log 8539 Log file, useful mostly for debugging
Tune-83647-get.log 3071 Log file, useful mostly for debugging
These files should be available for 24 hours.