Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1776/AndersonsBudgetV1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2769-AndersonsBudgetV1.ps) >>/Users/jc/w/tmp/Tune-2769-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1776/AndersonsBudgetV1.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-2769-AndersonsBudgetV1.abc 154 ABC music file with the extracted tune(s)
Tune-2769-AndersonsBudgetV1.ps 6 PostScript
Tune-2769-AndersonsBudgetV1.txt 154 Plain-text file with the extracted tune(s)
Tune-2769-get.log 4213 Log file, useful mostly for debugging
Tune-27690-get.log 4016 Log file, useful mostly for debugging
Tune-27695-24CountryDances_1826_Goulding_dAlmaine.abc 176 ABC music file with the extracted tune(s)
Tune-27695-24CountryDances_1826_Goulding_dAlmaine.txt 176 Plain-text file with the extracted tune(s)
Tune-27695-get.log 7752 Log file, useful mostly for debugging
These files should be available for 24 hours.