pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-39059-042_Goud_a_Goupens.ps) >>/Users/jc/w/tmp/Tune-39059-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Stewart/SCAJMR/042_Goud_a_Goupens.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Tune-39059-042_Goud_a_Goupens.abc 702 ABC music file with the extracted tune(s)
Tune-39059-042_Goud_a_Goupens.ps 35685 PostScript
Tune-39059-042_Goud_a_Goupens.txt 702 Plain-text file with the extracted tune(s)
Tune-39059-get.log 6002 Log file, useful mostly for debugging
These files should be available for 24 hours.