pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9908-21112_PETRIES_FROLIC.ps) >>/Users/jc/w/tmp/Tune-9908-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Kohlers/21112_PETRIES_FROLIC.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_99082.log 263256 Log file, useful mostly for debugging
Coll_99084.log 263256 Log file, useful mostly for debugging
Coll_99089.log 264661 Log file, useful mostly for debugging
Form_99083.log 826 Log file, useful mostly for debugging
Form_99089.log 954 Log file, useful mostly for debugging
Tune-9908-21112_PETRIES_FROLIC.abc 647 ABC music file with the extracted tune(s)
Tune-9908-21112_PETRIES_FROLIC.ps 39195 PostScript
Tune-9908-21112_PETRIES_FROLIC.txt 647 Plain-text file with the extracted tune(s)
Tune-9908-get.log 4700 Log file, useful mostly for debugging
Tune-99080-get.log 4240 Log file, useful mostly for debugging
Tune-99081-get.log 5060 Log file, useful mostly for debugging
These files should be available for 24 hours.