pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4696-Unst_Bridal_March.ps) >>/Users/jc/w/tmp/Tune-4696-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/Unst_Bridal_March.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_46965.log 284330 Log file, useful mostly for debugging
Tune-4696-Unst_Bridal_March.abc 2104 ABC music file with the extracted tune(s)
Tune-4696-Unst_Bridal_March.ps 42145 PostScript
Tune-4696-Unst_Bridal_March.txt 2104 Plain-text file with the extracted tune(s)
Tune-4696-get.log 5007 Log file, useful mostly for debugging
Tune-46961-get.log 1521 Log file, useful mostly for debugging
Tune-46969-AGJ03.abc 2644 ABC music file with the extracted tune(s)
Tune-46969-AGJ03.pdf 52979 Portable Data Format
Tune-46969-AGJ03.ps 55266 PostScript
Tune-46969-AGJ03.txt 2644 Plain-text file with the extracted tune(s)
Tune-46969-get.log 5070 Log file, useful mostly for debugging
These files should be available for 24 hours.