Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/save/Round_Band_Book_of_Playford.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6519-Round_Band_Book_of_Playford.ps) >>/Users/jc/w/tmp/Tune-6519-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/save/Round_Band_Book_of_Playford.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-6519-Round_Band_Book_of_Playford.abc 164 ABC music file with the extracted tune(s)
Tune-6519-Round_Band_Book_of_Playford.ps 6 PostScript
Tune-6519-Round_Band_Book_of_Playford.txt 164 Plain-text file with the extracted tune(s)
Tune-6519-get.log 4419 Log file, useful mostly for debugging
Tune-65195-21433_Cuckoo_Sett_tune_6-001.svg 16710 Scalable Vector Graphics format
Tune-65195-21433_Cuckoo_Sett_tune_6.abc 874 ABC music file with the extracted tune(s)
Tune-65195-21433_Cuckoo_Sett_tune_6.txt 874 Plain-text file with the extracted tune(s)
Tune-65195-flowers_of_Edinburgh.abc 157 ABC music file with the extracted tune(s)
Tune-65195-flowers_of_Edinburgh.pdf 2217 Portable Data Format
Tune-65195-flowers_of_Edinburgh.ps 6 PostScript
Tune-65195-flowers_of_Edinburgh.txt 157 Plain-text file with the extracted tune(s)
Tune-65195-get.log 9796 Log file, useful mostly for debugging
These files should be available for 24 hours.