Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1800/Glen2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5471-Glen2.ps) >>/Users/jc/w/tmp/Tune-5471-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1800/Glen2.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-5471-Glen2.abc 142 ABC music file with the extracted tune(s)
Tune-5471-Glen2.ps 6 PostScript
Tune-5471-Glen2.txt 142 Plain-text file with the extracted tune(s)
Tune-5471-get.log 3959 Log file, useful mostly for debugging
Tune-54710-get.log 8310 Log file, useful mostly for debugging
Tune-54711-get.log 5906 Log file, useful mostly for debugging
Tune-54712-get.log 9736 Log file, useful mostly for debugging
Tune-54713-get.log 3662 Log file, useful mostly for debugging
Tune-54714-get.log 5698 Log file, useful mostly for debugging
Tune-54715-get.log 3978 Log file, useful mostly for debugging
Tune-54716-Wilson_Harmony_4NCD_1812_V2.abc 165 ABC music file with the extracted tune(s)
Tune-54716-Wilson_Harmony_4NCD_1812_V2.ps 6 PostScript
Tune-54716-Wilson_Harmony_4NCD_1812_V2.txt 165 Plain-text file with the extracted tune(s)
Tune-54716-get.log 8018 Log file, useful mostly for debugging
Tune-54718-get.log 5869 Log file, useful mostly for debugging
These files should be available for 24 hours.