pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4374-21223_Massasoit_Sett_tune_3.ps) >>/Users/jc/w/tmp/Tune-4374-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/EliasHowe/MusiciansCompanionP2/21223_Massasoit_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
Coll_43747.log 283409 Log file, useful mostly for debugging
Coll_43749.log 291810 Log file, useful mostly for debugging
Tune-4374-21223_Massasoit_Sett_tune_3.abc 998 ABC music file with the extracted tune(s)
Tune-4374-21223_Massasoit_Sett_tune_3.ps 36179 PostScript
Tune-4374-21223_Massasoit_Sett_tune_3.txt 998 Plain-text file with the extracted tune(s)
Tune-4374-get.log 5059 Log file, useful mostly for debugging
Tune-43742-get.log 1386 Log file, useful mostly for debugging
Tune-43748-262_Rickets_Hornpipe.abc 745 ABC music file with the extracted tune(s)
Tune-43748-262_Rickets_Hornpipe.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-43748-262_Rickets_Hornpipe.ps 34903 PostScript
Tune-43748-262_Rickets_Hornpipe.txt 745 Plain-text file with the extracted tune(s)
Tune-43748-get.log 5622 Log file, useful mostly for debugging
These files should be available for 24 hours.