pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5602-Mooses_Feedi.ps) >>/Users/jc/w/tmp/Tune-5602-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/shottish/Mooses_Feedi.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_56023.log 485245 Log file, useful mostly for debugging
Coll_56029.log 147965 Log file, useful mostly for debugging
Tune-5602-Mooses_Feedi.abc 457 ABC music file with the extracted tune(s)
Tune-5602-Mooses_Feedi.ps 33637 PostScript
Tune-5602-Mooses_Feedi.txt 457 Plain-text file with the extracted tune(s)
Tune-5602-get.log 4449 Log file, useful mostly for debugging
Tune-56020-get.log 1347 Log file, useful mostly for debugging
Tune-56025-get.log 1328 Log file, useful mostly for debugging
Tune-56028-get.log 5742 Log file, useful mostly for debugging
These files should be available for 24 hours.