Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/MM4/IgnatiusSancho_CNS_v1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9540-IgnatiusSancho_CNS_v1.ps) >>/Users/jc/w/tmp/Tune-9540-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/MM4/IgnatiusSancho_CNS_v1.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-9540-IgnatiusSancho_CNS_v1.abc 157 ABC music file with the extracted tune(s)
Tune-9540-IgnatiusSancho_CNS_v1.ps 6 PostScript
Tune-9540-IgnatiusSancho_CNS_v1.txt 157 Plain-text file with the extracted tune(s)
Tune-9540-get.log 8508 Log file, useful mostly for debugging
Tune-95405-get.log 5678 Log file, useful mostly for debugging
Tune-95408-CSRHW-abc1.abc 147 ABC music file with the extracted tune(s)
Tune-95408-CSRHW-abc1.ps 6 PostScript
Tune-95408-CSRHW-abc1.txt 147 Plain-text file with the extracted tune(s)
Tune-95408-EliasHowe_MusiciansCompanionP3-1844-V2.abc 174 ABC music file with the extracted tune(s)
Tune-95408-EliasHowe_MusiciansCompanionP3-1844-V2.ps 6 PostScript
Tune-95408-EliasHowe_MusiciansCompanionP3-1844-V2.txt 174 Plain-text file with the extracted tune(s)
Tune-95408-get.log 8566 Log file, useful mostly for debugging
These files should be available for 24 hours.