pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3799-30483-New_Rigged_Ship-V1.ps) >>/Users/jc/w/tmp/Tune-3799-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/EliasHowe/MusiciansCompanionP3/30483-New_Rigged_Ship-V1.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_37993.log 919621 Log file, useful mostly for debugging
Coll_37999.log 454210 Log file, useful mostly for debugging
Form_37992.log 865 Log file, useful mostly for debugging
Tune-3799-30483-New_Rigged_Ship-V1.abc 890 ABC music file with the extracted tune(s)
Tune-3799-30483-New_Rigged_Ship-V1.ps 35798 PostScript
Tune-3799-30483-New_Rigged_Ship-V1.txt 890 Plain-text file with the extracted tune(s)
Tune-3799-get.log 4965 Log file, useful mostly for debugging
Tune-37999-get.log 1390 Log file, useful mostly for debugging
These files should be available for 24 hours.