pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-40473-21052_YES_OR_NO_Valse2.ps) >>/Users/jc/w/tmp/Tune-40473-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Kohlers/21052_YES_OR_NO_Valse2.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Form_40473.log 1804 Log file, useful mostly for debugging
Tune-40473-21052_YES_OR_NO_Valse2.abc 696 ABC music file with the extracted tune(s)
Tune-40473-21052_YES_OR_NO_Valse2.ps 35769 PostScript
Tune-40473-21052_YES_OR_NO_Valse2.txt 696 Plain-text file with the extracted tune(s)
Tune-40473-get.log 4746 Log file, useful mostly for debugging
These files should be available for 24 hours.