pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-40593-21063_Bayaders_Sett_tune_3.ps) >>/Users/jc/w/tmp/Tune-40593-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/EliasHowe/MusiciansCompanionP2/21063_Bayaders_Sett_tune_3.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-40593-21063_Bayaders_Sett_tune_3.abc 1168 ABC music file with the extracted tune(s)
Tune-40593-21063_Bayaders_Sett_tune_3.ps 35523 PostScript
Tune-40593-21063_Bayaders_Sett_tune_3.txt 1168 Plain-text file with the extracted tune(s)
Tune-40593-RobertBremner_CSRCD2.abc 157 ABC music file with the extracted tune(s)
Tune-40593-RobertBremner_CSRCD2.ps 6 PostScript
Tune-40593-RobertBremner_CSRCD2.txt 157 Plain-text file with the extracted tune(s)
Tune-40593-get.log 9254 Log file, useful mostly for debugging
These files should be available for 24 hours.