pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3245-JohnnyMcGill0.ps) >>/Users/jc/w/tmp/Tune-3245-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/JohnnyMcGill0.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_32455.log 413702 Log file, useful mostly for debugging
Tune-3245-JohnnyMcGill0.abc 1652 ABC music file with the extracted tune(s)
Tune-3245-JohnnyMcGill0.ps 42588 PostScript
Tune-3245-JohnnyMcGill0.txt 1652 Plain-text file with the extracted tune(s)
Tune-3245-get.log 4462 Log file, useful mostly for debugging
Tune-32452-CiaoCiaoBambina.abc 3194 ABC music file with the extracted tune(s)
Tune-32452-CiaoCiaoBambina.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-32452-CiaoCiaoBambina.ps 42900 PostScript
Tune-32452-CiaoCiaoBambina.txt 3194 Plain-text file with the extracted tune(s)
Tune-32452-get.log 6708 Log file, useful mostly for debugging
Tune-32455-SaintPatricksDay.abc 1839 ABC music file with the extracted tune(s)
Tune-32455-SaintPatricksDay.pdf 46306 Portable Data Format
Tune-32455-SaintPatricksDay.ps 47845 PostScript
Tune-32455-SaintPatricksDay.txt 1839 Plain-text file with the extracted tune(s)
Tune-32455-get.log 5448 Log file, useful mostly for debugging
These files should be available for 24 hours.