pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-50076-21481_GIRNIGOE_CASTLE.ps) >>/Users/jc/w/tmp/Tune-50076-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Kohlers/21481_GIRNIGOE_CASTLE.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_50076.log 846 Log file, useful mostly for debugging
Tune-50076-21481_GIRNIGOE_CASTLE.abc 660 ABC music file with the extracted tune(s)
Tune-50076-21481_GIRNIGOE_CASTLE.ps 39034 PostScript
Tune-50076-21481_GIRNIGOE_CASTLE.txt 660 Plain-text file with the extracted tune(s)
Tune-50076-get.log 4745 Log file, useful mostly for debugging
These files should be available for 24 hours.