pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-69846-4036_Scotland_Yet.ps) >>/Users/jc/w/tmp/Tune-69846-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Kerr/MM4/4036_Scotland_Yet.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_69846.log 153217 Log file, useful mostly for debugging
Tune-69846-4036_Scotland_Yet.abc 399 ABC music file with the extracted tune(s)
Tune-69846-4036_Scotland_Yet.ps 34327 PostScript
Tune-69846-4036_Scotland_Yet.txt 399 Plain-text file with the extracted tune(s)
Tune-69846-get.log 10209 Log file, useful mostly for debugging
These files should be available for 24 hours.