pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8521-Coblers_Jigg.ps) >>/Users/jc/w/tmp/Tune-8521-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/JohnWalsh/Coblers_Jigg.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_85213.log 1065510 Log file, useful mostly for debugging
Tune-8521-Coblers_Jigg.abc 1513 ABC music file with the extracted tune(s)
Tune-8521-Coblers_Jigg.ps 32966 PostScript
Tune-8521-Coblers_Jigg.txt 1513 Plain-text file with the extracted tune(s)
Tune-8521-get.log 4468 Log file, useful mostly for debugging
Tune-85218-get.log 1609 Log file, useful mostly for debugging
These files should be available for 24 hours.