pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6711-Polka02.ps) >>/Users/jc/w/tmp/Tune-6711-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/scand/Polka02.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_67111.log 256231 Log file, useful mostly for debugging
Coll_67116.log 234895 Log file, useful mostly for debugging
Coll_67119.log 244991 Log file, useful mostly for debugging
Find_67118.log 1647 Log file, useful mostly for debugging
Form_67115.log 1075 Log file, useful mostly for debugging
Tune-6711-Polka02.abc 2347 ABC music file with the extracted tune(s)
Tune-6711-Polka02.ps 54981 PostScript
Tune-6711-Polka02.txt 2347 Plain-text file with the extracted tune(s)
Tune-6711-get.log 7070 Log file, useful mostly for debugging
Tune-67112-get.log 57901 Log file, useful mostly for debugging
Tune-67119-get.log 1300 Log file, useful mostly for debugging
These files should be available for 24 hours.