pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8096-AmazonHornpipe.ps) >>/Users/jc/w/tmp/Tune-8096-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/ryan-cole/Tunes/AmazonHornpipe.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_8096.log 1162089 Log file, useful mostly for debugging
Coll_80961.log 278709 Log file, useful mostly for debugging
Coll_80963.log 275901 Log file, useful mostly for debugging
Coll_80964.log 530727 Log file, useful mostly for debugging
Coll_80965.log 277304 Log file, useful mostly for debugging
Coll_80967.log 275899 Log file, useful mostly for debugging
Coll_80968.log 280116 Log file, useful mostly for debugging
Tune-8096-AmazonHornpipe.abc 591 ABC music file with the extracted tune(s)
Tune-8096-AmazonHornpipe.ps 37657 PostScript
Tune-8096-AmazonHornpipe.txt 591 Plain-text file with the extracted tune(s)
Tune-8096-get.log 5159 Log file, useful mostly for debugging
These files should be available for 24 hours.