pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1648-Pols_Bingsjo1.ps) >>/Users/jc/w/tmp/Tune-1648-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/scand/Pols_Bingsjo1.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_16482.log 273090 Log file, useful mostly for debugging
Coll_16484.log 287144 Log file, useful mostly for debugging
Coll_16486.log 812913 Log file, useful mostly for debugging
Coll_16488.log 1188680 Log file, useful mostly for debugging
Tune-1648-Pols_Bingsjo1.abc 2266 ABC music file with the extracted tune(s)
Tune-1648-Pols_Bingsjo1.ps 55030 PostScript
Tune-1648-Pols_Bingsjo1.txt 2266 Plain-text file with the extracted tune(s)
Tune-1648-get.log 4448 Log file, useful mostly for debugging
Tune-16480-get.log 1463 Log file, useful mostly for debugging
Tune-16481-get.log 1517 Log file, useful mostly for debugging
These files should be available for 24 hours.