pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6449-20301_Murrays_Waltz.ps) >>/Users/jc/w/tmp/Tune-6449-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/EliasHowe/MusiciansCompanionP2/20301_Murrays_Waltz.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_64492.log 149966 Log file, useful mostly for debugging
Tune-6449-20301_Murrays_Waltz.abc 1062 ABC music file with the extracted tune(s)
Tune-6449-20301_Murrays_Waltz.ps 44221 PostScript
Tune-6449-20301_Murrays_Waltz.txt 1062 Plain-text file with the extracted tune(s)
Tune-6449-get.log 16538 Log file, useful mostly for debugging
Tune-64490-get.log 8834 Log file, useful mostly for debugging
Tune-64491-get.log 4486 Log file, useful mostly for debugging
Tune-64492-get.log 4032 Log file, useful mostly for debugging
Tune-64496-get.log 8449 Log file, useful mostly for debugging
These files should be available for 24 hours.