Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Glen2/Kerr_MM2-V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6723-Kerr_MM2-V2.ps) >>/Users/jc/w/tmp/Tune-6723-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Glen2/Kerr_MM2-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_67230.log 571470 Log file, useful mostly for debugging
Coll_67232.log 228 Log file, useful mostly for debugging
Coll_67235.log 288545 Log file, useful mostly for debugging
Find_67238.log 1652 Log file, useful mostly for debugging
Tune-6723-Kerr_MM2-V2.abc 149 ABC music file with the extracted tune(s)
Tune-6723-Kerr_MM2-V2.ps 6 PostScript
Tune-6723-Kerr_MM2-V2.txt 149 Plain-text file with the extracted tune(s)
Tune-6723-get.log 4093 Log file, useful mostly for debugging
Tune-67231-AbrahamMackintosh.abc 156 ABC music file with the extracted tune(s)
Tune-67231-AbrahamMackintosh.pdf 2217 Portable Data Format
Tune-67231-AbrahamMackintosh.ps 6 PostScript
Tune-67231-AbrahamMackintosh.txt 156 Plain-text file with the extracted tune(s)
Tune-67231-get.log 9888 Log file, useful mostly for debugging
Tune-67233-get.log 1418 Log file, useful mostly for debugging
Tune-67236-get.log 5449 Log file, useful mostly for debugging
Tune-67237-get.log 1403 Log file, useful mostly for debugging
These files should be available for 24 hours.