Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book01/Thompson_V2_1758-1765_FTM.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4181-Thompson_V2_1758-1765_FTM.ps) >>/Users/jc/w/tmp/Tune-4181-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book01/Thompson_V2_1758-1765_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_41811.log 287140 Log file, useful mostly for debugging
Coll_41818.log 289950 Log file, useful mostly for debugging
Tune-4181-Thompson_V2_1758-1765_FTM.abc 164 ABC music file with the extracted tune(s)
Tune-4181-Thompson_V2_1758-1765_FTM.ps 6 PostScript
Tune-4181-Thompson_V2_1758-1765_FTM.txt 164 Plain-text file with the extracted tune(s)
Tune-4181-get.log 7657 Log file, useful mostly for debugging
Tune-41810-get.log 5919 Log file, useful mostly for debugging
Tune-41816-24CountryDances_1803_Preston.abc 165 ABC music file with the extracted tune(s)
Tune-41816-24CountryDances_1803_Preston.pdf 2217 Portable Data Format
Tune-41816-24CountryDances_1803_Preston.ps 6 PostScript
Tune-41816-24CountryDances_1803_Preston.txt 165 Plain-text file with the extracted tune(s)
Tune-41816-get.log 5408 Log file, useful mostly for debugging
These files should be available for 24 hours.