pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-54307-PolskaEfterLappNils.ps) >>/Users/jc/w/tmp/Tune-54307-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scand/PolskaEfterLappNils.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_54307.log 563040 Log file, useful mostly for debugging
Tune-54307-PolskaEfterLappNils.abc 1027 ABC music file with the extracted tune(s)
Tune-54307-PolskaEfterLappNils.ps 45844 PostScript
Tune-54307-PolskaEfterLappNils.txt 1027 Plain-text file with the extracted tune(s)
Tune-54307-get.log 4547 Log file, useful mostly for debugging
These files should be available for 24 hours.