pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6175-MaidOfTheMill.ps) >>/Users/jc/w/tmp/Tune-6175-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/England/MaidOfTheMill.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_61754.log 147965 Log file, useful mostly for debugging
Coll_61757.log 278710 Log file, useful mostly for debugging
Coll_61758.log 979846 Log file, useful mostly for debugging
Find_61753.log 1997 Log file, useful mostly for debugging
Tune-6175-MaidOfTheMill.abc 940 ABC music file with the extracted tune(s)
Tune-6175-MaidOfTheMill.ps 38408 PostScript
Tune-6175-MaidOfTheMill.txt 940 Plain-text file with the extracted tune(s)
Tune-6175-get.log 4440 Log file, useful mostly for debugging
Tune-61759-TrowieJig01.abc 2582 ABC music file with the extracted tune(s)
Tune-61759-TrowieJig01.ps 48230 PostScript
Tune-61759-TrowieJig01.txt 2582 Plain-text file with the extracted tune(s)
Tune-61759-get.log 4450 Log file, useful mostly for debugging
These files should be available for 24 hours.