Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Kerr_MM/24CountryDances_1809_Cahusac_FTM.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7695-24CountryDances_1809_Cahusac_FTM.ps) >>/Users/jc/w/tmp/Tune-7695-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Kerr_MM/24CountryDances_1809_Cahusac_FTM.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_76950.log 873951 Log file, useful mostly for debugging
Coll_76951.log 282925 Log file, useful mostly for debugging
Coll_76953.log 288546 Log file, useful mostly for debugging
Sess-76954.log 147891 Log file, useful mostly for debugging
Tune-7695-24CountryDances_1809_Cahusac_FTM.abc 172 ABC music file with the extracted tune(s)
Tune-7695-24CountryDances_1809_Cahusac_FTM.ps 6 PostScript
Tune-7695-24CountryDances_1809_Cahusac_FTM.txt 172 Plain-text file with the extracted tune(s)
Tune-7695-get.log 5988 Log file, useful mostly for debugging
Tune-76957-get.log 4887 Log file, useful mostly for debugging
Tune-76958-get.log 4963 Log file, useful mostly for debugging
These files should be available for 24 hours.