pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-10101-2082_James_Mc_Nicoll.ps) >>/Users/jc/w/tmp/Tune-10101-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Kerr/MM2/2082_James_Mc_Nicoll.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_10101.log 395325 Log file, useful mostly for debugging
Tune-10101-2082_James_Mc_Nicoll.abc 536 ABC music file with the extracted tune(s)
Tune-10101-2082_James_Mc_Nicoll.ps 36290 PostScript
Tune-10101-2082_James_Mc_Nicoll.txt 536 Plain-text file with the extracted tune(s)
Tune-10101-get.log 4729 Log file, useful mostly for debugging
These files should be available for 24 hours.