Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book22/Jean_Henry_dAnglebert_PdC2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5022-Jean_Henry_dAnglebert_PdC2.ps) >>/Users/jc/w/tmp/Tune-5022-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book22/Jean_Henry_dAnglebert_PdC2.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_50222.log 1234310 Log file, useful mostly for debugging
Tune-5022-Jean_Henry_dAnglebert_PdC2.abc 165 ABC music file with the extracted tune(s)
Tune-5022-Jean_Henry_dAnglebert_PdC2.ps 6 PostScript
Tune-5022-Jean_Henry_dAnglebert_PdC2.txt 165 Plain-text file with the extracted tune(s)
Tune-5022-get.log 4416 Log file, useful mostly for debugging
Tune-50222-Collections.abc 154 ABC music file with the extracted tune(s)
Tune-50222-Collections.pdf 2217 Portable Data Format
Tune-50222-Collections.ps 6 PostScript
Tune-50222-Collections.txt 154 Plain-text file with the extracted tune(s)
Tune-50222-get.log 4951 Log file, useful mostly for debugging
Tune-50226-get.log 4406 Log file, useful mostly for debugging
These files should be available for 24 hours.