pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-93551-Musical_Priest_1.ps) >>/Users/jc/w/tmp/Tune-93551-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Perron-Miller/Musical_Priest_1.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_93551.log 478010 Log file, useful mostly for debugging
Form_93551.log 1254 Log file, useful mostly for debugging
Tune-93551-Musical_Priest_1.abc 526 ABC music file with the extracted tune(s)
Tune-93551-Musical_Priest_1.ps 35779 PostScript
Tune-93551-Musical_Priest_1.txt 526 Plain-text file with the extracted tune(s)
Tune-93551-get.log 9604 Log file, useful mostly for debugging
These files should be available for 24 hours.