pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8706-Zytglogge.ps) >>/Users/jc/w/tmp/Tune-8706-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/Zytglogge.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-8706-Zytglogge.abc 2125 ABC music file with the extracted tune(s)
Tune-8706-Zytglogge.ps 48424 PostScript
Tune-8706-Zytglogge.txt 2125 Plain-text file with the extracted tune(s)
Tune-8706-get.log 4765 Log file, useful mostly for debugging
Tune-87069-_2.abc 0 ABC music file with the extracted tune(s)
Tune-87069-_2.pdf 2217 Portable Data Format
Tune-87069-_2.ps 6 PostScript
Tune-87069-_2.txt 0 Plain-text file with the extracted tune(s)
Tune-87069-get.log 4524 Log file, useful mostly for debugging
These files should be available for 24 hours.