pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-31283-30483.ps) >>/Users/jc/w/tmp/Tune-31283-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/EliasHowe/MusiciansCompanionP3/30483=New_Rigged_Ship-V2.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_31283.log 1375231 Log file, useful mostly for debugging
Form_31283.log 943 Log file, useful mostly for debugging
Tune-31283-30483.abc 887 ABC music file with the extracted tune(s)
Tune-31283-30483.ps 35819 PostScript
Tune-31283-30483.txt 887 Plain-text file with the extracted tune(s)
Tune-31283-get.log 4897 Log file, useful mostly for debugging
These files should be available for 24 hours.