pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5829-waltzes.ps) >>/Users/jc/w/tmp/Tune-5829-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Australia/waltzes.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_58293.log 767650 Log file, useful mostly for debugging
Coll_58297.log 482435 Log file, useful mostly for debugging
Tune-5829-get.log 11223 Log file, useful mostly for debugging
Tune-5829-waltzes.abc 7648 ABC music file with the extracted tune(s)
Tune-5829-waltzes.ps 87009 PostScript
Tune-5829-waltzes.txt 7648 Plain-text file with the extracted tune(s)
Tune-58290-get.log 5197 Log file, useful mostly for debugging
Tune-58297-Sonderho2_D-001.svg 15529 Scalable Vector Graphics format
Tune-58297-Sonderho2_D.abc 464 ABC music file with the extracted tune(s)
Tune-58297-Sonderho2_D.txt 464 Plain-text file with the extracted tune(s)
Tune-58297-get.log 4086 Log file, useful mostly for debugging
Tune-58299-get.log 12892 Log file, useful mostly for debugging
These files should be available for 24 hours.