pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7300-AngusMacLeod0.ps) >>/Users/jc/w/tmp/Tune-7300-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/AngusMacLeod0.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_73002.log 146029 Log file, useful mostly for debugging
Coll_73006.log 284330 Log file, useful mostly for debugging
Tune-7300-AngusMacLeod0.abc 649 ABC music file with the extracted tune(s)
Tune-7300-AngusMacLeod0.ps 34717 PostScript
Tune-7300-AngusMacLeod0.txt 649 Plain-text file with the extracted tune(s)
Tune-7300-get.log 4860 Log file, useful mostly for debugging
Tune-73000-get.log 2388 Log file, useful mostly for debugging
Tune-73004-TornaASorrento_AwB-001.svg 43749 Scalable Vector Graphics format
Tune-73004-TornaASorrento_AwB-002.svg 27821 Scalable Vector Graphics format
Tune-73004-TornaASorrento_AwB.abc 2168 ABC music file with the extracted tune(s)
Tune-73004-TornaASorrento_AwB.txt 2168 Plain-text file with the extracted tune(s)
Tune-73004-get.log 6660 Log file, useful mostly for debugging
These files should be available for 24 hours.