pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-50103-21532_LENA_2.ps) >>/Users/jc/w/tmp/Tune-50103-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Kohlers/21532_LENA_2.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_50103.log 832 Log file, useful mostly for debugging
Tune-50103-21532_LENA_2.abc 796 ABC music file with the extracted tune(s)
Tune-50103-21532_LENA_2.ps 37364 PostScript
Tune-50103-21532_LENA_2.txt 796 Plain-text file with the extracted tune(s)
Tune-50103-get.log 4747 Log file, useful mostly for debugging
These files should be available for 24 hours.