pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6409-10491_Air_Duettino.ps) >>/Users/jc/w/tmp/Tune-6409-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/MoF/10491_Air_Duettino.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-6409-10491_Air_Duettino.abc 1034 ABC music file with the extracted tune(s)
Tune-6409-10491_Air_Duettino.ps 41639 PostScript
Tune-6409-10491_Air_Duettino.txt 1034 Plain-text file with the extracted tune(s)
Tune-6409-get.log 29383 Log file, useful mostly for debugging
Tune-64090-get.log 9067 Log file, useful mostly for debugging
Tune-64093-get.log 4099 Log file, useful mostly for debugging
Tune-64095-LordMayo.abc 485 ABC music file with the extracted tune(s)
Tune-64095-LordMayo.pdf 13413 Portable Data Format
Tune-64095-LordMayo.ps 37169 PostScript
Tune-64095-LordMayo.txt 485 Plain-text file with the extracted tune(s)
Tune-64095-get.log 5114 Log file, useful mostly for debugging
These files should be available for 24 hours.