Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1792/Rutherford_Compleat_Collection_V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9549-Rutherford_Compleat_Collection_V2.ps) >>/Users/jc/w/tmp/Tune-9549-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1792/Rutherford_Compleat_Collection_V2.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_95496.log 278710 Log file, useful mostly for debugging
Coll_95499.log 554610 Log file, useful mostly for debugging
Tune-9549-Rutherford_Compleat_Collection_V2.abc 170 ABC music file with the extracted tune(s)
Tune-9549-Rutherford_Compleat_Collection_V2.ps 6 PostScript
Tune-9549-Rutherford_Compleat_Collection_V2.txt 170 Plain-text file with the extracted tune(s)
Tune-9549-get.log 4547 Log file, useful mostly for debugging
Tune-95492-RobertPurdie_TomThumb.abc 157 ABC music file with the extracted tune(s)
Tune-95492-RobertPurdie_TomThumb.ps 6 PostScript
Tune-95492-RobertPurdie_TomThumb.txt 157 Plain-text file with the extracted tune(s)
Tune-95492-get.log 4335 Log file, useful mostly for debugging
These files should be available for 24 hours.