pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2079-x15.ps) >>/Users/jc/w/tmp/Tune-2079-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Contra/x15.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_20791.log 139580 Log file, useful mostly for debugging
Coll_20795.log 420615 Log file, useful mostly for debugging
Coll_20797.log 159326 Log file, useful mostly for debugging
Find_20791.log 1519 Log file, useful mostly for debugging
Tune-2079-get.log 8962 Log file, useful mostly for debugging
Tune-2079-x15.abc 823 ABC music file with the extracted tune(s)
Tune-2079-x15.ps 35914 PostScript
Tune-2079-x15.txt 823 Plain-text file with the extracted tune(s)
Tune-20790-get.log 8574 Log file, useful mostly for debugging
These files should be available for 24 hours.