pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9931-32512_THE_THISTLE_HORNPIPE.ps) >>/Users/jc/w/tmp/Tune-9931-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Kohlers/32512_THE_THISTLE_HORNPIPE.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_99311.log 264661 Log file, useful mostly for debugging
Coll_99313.log 263256 Log file, useful mostly for debugging
Coll_99314.log 391826 Log file, useful mostly for debugging
Coll_99315.log 263256 Log file, useful mostly for debugging
Form_9931.log 825 Log file, useful mostly for debugging
Form_99315.log 1646 Log file, useful mostly for debugging
Tune-9931-32512_THE_THISTLE_HORNPIPE.abc 669 ABC music file with the extracted tune(s)
Tune-9931-32512_THE_THISTLE_HORNPIPE.ps 39544 PostScript
Tune-9931-32512_THE_THISTLE_HORNPIPE.txt 669 Plain-text file with the extracted tune(s)
Tune-9931-get.log 189103 Log file, useful mostly for debugging
Tune-99310-get.log 5117 Log file, useful mostly for debugging
Tune-99312-20092_Duncan_Gray.abc 507 ABC music file with the extracted tune(s)
Tune-99312-20092_Duncan_Gray.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-99312-20092_Duncan_Gray.ps 34989 PostScript
Tune-99312-20092_Duncan_Gray.txt 507 Plain-text file with the extracted tune(s)
Tune-99312-get.log 5317 Log file, useful mostly for debugging
These files should be available for 24 hours.