pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5264-RJ_2019_Set2.ps) >>/Users/jc/w/tmp/Tune-5264-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Contra/RJ_2019_Set2.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_5264.log 384085 Log file, useful mostly for debugging
Coll_52641.log 282929 Log file, useful mostly for debugging
Coll_52644.log 353175 Log file, useful mostly for debugging
Tune-5264-RJ_2019_Set2.abc 1233 ABC music file with the extracted tune(s)
Tune-5264-RJ_2019_Set2.ps 47760 PostScript
Tune-5264-RJ_2019_Set2.txt 1233 Plain-text file with the extracted tune(s)
Tune-5264-get.log 5294 Log file, useful mostly for debugging
These files should be available for 24 hours.