pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-44205-Sva_Nok_Le.ps) >>/Users/jc/w/tmp/Tune-44205-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/doc/tune/Sva_Nok_Le.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_44205.log 444503 Log file, useful mostly for debugging
Tune-44205-Sva_Nok_Le.abc 1050 ABC music file with the extracted tune(s)
Tune-44205-Sva_Nok_Le.ps 41031 PostScript
Tune-44205-Sva_Nok_Le.txt 1050 Plain-text file with the extracted tune(s)
Tune-44205-get.log 4392 Log file, useful mostly for debugging
These files should be available for 24 hours.