Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/_/AbrahamMackintosh.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9905-AbrahamMackintosh.ps) >>/Users/jc/w/tmp/Tune-9905-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/_/AbrahamMackintosh.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Find_99058.log 1766 Log file, useful mostly for debugging
Tune-9905-AbrahamMackintosh.abc 151 ABC music file with the extracted tune(s)
Tune-9905-AbrahamMackintosh.ps 6 PostScript
Tune-9905-AbrahamMackintosh.txt 151 Plain-text file with the extracted tune(s)
Tune-9905-get.log 8486 Log file, useful mostly for debugging
Tune-99052-get.log 4377 Log file, useful mostly for debugging
Tune-99053-24CountryDances_1808_Goulding_PD.abc 166 ABC music file with the extracted tune(s)
Tune-99053-24CountryDances_1808_Goulding_PD.pdf 2217 Portable Data Format
Tune-99053-24CountryDances_1808_Goulding_PD.ps 6 PostScript
Tune-99053-24CountryDances_1808_Goulding_PD.txt 166 Plain-text file with the extracted tune(s)
Tune-99053-get.log 5504 Log file, useful mostly for debugging
Tune-99055-get.log 4455 Log file, useful mostly for debugging
These files should be available for 24 hours.