pscmd="(jcabc2ps /Users/jc/w/tmp/Tune-7584-HUTB1-1844-V2.abc -F fmt/pdf_70.fmt +s 0.70 +maxs 2000 )>/Users/jc/w/tmp/Tune-7584-HUTB1-1844-V2.ps 2>>/Users/jc/w/tmp/Tune-7584-get.log" returned status 35584.
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7584-HUTB1-1844-V2.ps) >>/Users/jc/w/tmp/Tune-7584-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Hamilton/HUTB1-1844-V2.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-7584-HUTB1-1844-V2.abc 433575 ABC music file with the extracted tune(s)
Tune-7584-HUTB1-1844-V2.ps 1291775 PostScript
Tune-7584-HUTB1-1844-V2.txt 433575 Plain-text file with the extracted tune(s)
Tune-7584-get.log 377489 Log file, useful mostly for debugging
Tune-75840-get.log 8660 Log file, useful mostly for debugging
Tune-75842-get.log 5563 Log file, useful mostly for debugging
Tune-75844-ArthursSeatWaltzes.abc 155 ABC music file with the extracted tune(s)
Tune-75844-ArthursSeatWaltzes.pdf 2217 Portable Data Format
Tune-75844-ArthursSeatWaltzes.ps 6 PostScript
Tune-75844-ArthursSeatWaltzes.txt 155 Plain-text file with the extracted tune(s)
Tune-75844-get.log 18412 Log file, useful mostly for debugging
Tune-75845-get.log 4140 Log file, useful mostly for debugging
Tune-75846-get.log 1424 Log file, useful mostly for debugging
Tune-75848-book0.abc 176 ABC music file with the extracted tune(s)
Tune-75848-book0.ps 6 PostScript
Tune-75848-book0.txt 176 Plain-text file with the extracted tune(s)
Tune-75848-get.log 4165 Log file, useful mostly for debugging
These files should be available for 24 hours.