pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2036-1798_Bland_Weller.ps) >>/Users/jc/w/tmp/Tune-2036-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/dfty/1798_Bland_Weller.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_20360.log 284330 Log file, useful mostly for debugging
Coll_20367.log 289950 Log file, useful mostly for debugging
Coll_20369.log 570066 Log file, useful mostly for debugging
Form_20365.log 1229 Log file, useful mostly for debugging
Tune-2036-1798_Bland_Weller.abc 17692 ABC music file with the extracted tune(s)
Tune-2036-1798_Bland_Weller.ps 126653 PostScript
Tune-2036-1798_Bland_Weller.txt 17692 Plain-text file with the extracted tune(s)
Tune-2036-get.log 17827 Log file, useful mostly for debugging
These files should be available for 24 hours.