Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Whetherly21/Thompson_V4_1773-1780_PD.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2224-Thompson_V4_1773-1780_PD.ps) >>/Users/jc/w/tmp/Tune-2224-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Whetherly21/Thompson_V4_1773-1780_PD.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-2224-Thompson_V4_1773-1780_PD.abc 168 ABC music file with the extracted tune(s)
Tune-2224-Thompson_V4_1773-1780_PD.ps 6 PostScript
Tune-2224-Thompson_V4_1773-1780_PD.txt 168 Plain-text file with the extracted tune(s)
Tune-2224-get.log 7952 Log file, useful mostly for debugging
Tune-22240-Pat_Shaw_NewWineInOldBottles.abc 166 ABC music file with the extracted tune(s)
Tune-22240-Pat_Shaw_NewWineInOldBottles.pdf 2217 Portable Data Format
Tune-22240-Pat_Shaw_NewWineInOldBottles.ps 6 PostScript
Tune-22240-Pat_Shaw_NewWineInOldBottles.txt 166 Plain-text file with the extracted tune(s)
Tune-22240-get.log 17929 Log file, useful mostly for debugging
Tune-22241-get.log 8764 Log file, useful mostly for debugging
Tune-22242-get.log 3638 Log file, useful mostly for debugging
Tune-22244-get.log 10174 Log file, useful mostly for debugging
Tune-22247-get.log 8976 Log file, useful mostly for debugging
Tune-22248-get.log 4645 Log file, useful mostly for debugging
These files should be available for 24 hours.