pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-51702-CJ15.ps) >>/Users/jc/w/tmp/Tune-51702-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/contra/CJ15.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_51702.log 291355 Log file, useful mostly for debugging
Tune-51702-CJ15.abc 2029 ABC music file with the extracted tune(s)
Tune-51702-CJ15.ps 49563 PostScript
Tune-51702-CJ15.txt 2029 Plain-text file with the extracted tune(s)
Tune-51702-get.log 4296 Log file, useful mostly for debugging
These files should be available for 24 hours.