pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-71888-Vals15.ps) >>/Users/jc/w/tmp/Tune-71888-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scand/Vals15.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_71888.log 274495 Log file, useful mostly for debugging
Tune-71888-Vals15.abc 2378 ABC music file with the extracted tune(s)
Tune-71888-Vals15.ps 53967 PostScript
Tune-71888-Vals15.txt 2378 Plain-text file with the extracted tune(s)
Tune-71888-get.log 4293 Log file, useful mostly for debugging
These files should be available for 24 hours.