pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-50244-Biserka.ps) >>/Users/jc/w/tmp/Tune-50244-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Balkan/Biserka.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-50244-Biserka.abc 1568 ABC music file with the extracted tune(s)
Tune-50244-Biserka.ps 48161 PostScript
Tune-50244-Biserka.txt 1568 Plain-text file with the extracted tune(s)
Tune-50244-get.log 4648 Log file, useful mostly for debugging
These files should be available for 24 hours.