pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-88948-Maurice1.ps) >>/Users/jc/w/tmp/Tune-88948-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/Maurice1.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-88948-Hambo01.abc 2304 ABC music file with the extracted tune(s)
Tune-88948-Hambo01.ps 55806 PostScript
Tune-88948-Hambo01.txt 2304 Plain-text file with the extracted tune(s)
Tune-88948-Maurice1.abc 1915 ABC music file with the extracted tune(s)
Tune-88948-Maurice1.ps 52174 PostScript
Tune-88948-Maurice1.txt 1915 Plain-text file with the extracted tune(s)
Tune-88948-get.log 9045 Log file, useful mostly for debugging
These files should be available for 24 hours.