Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Rare_Small/Gow-CSR4-abc1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2870-Gow-CSR4-abc1.ps) >>/Users/jc/w/tmp/Tune-2870-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Rare_Small/Gow-CSR4-abc1.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-2870-Gow-CSR4-abc1.abc 156 ABC music file with the extracted tune(s)
Tune-2870-Gow-CSR4-abc1.ps 6 PostScript
Tune-2870-Gow-CSR4-abc1.txt 156 Plain-text file with the extracted tune(s)
Tune-2870-get.log 4165 Log file, useful mostly for debugging
Tune-28702-IgnatiusSancho_CNS_v2.abc 158 ABC music file with the extracted tune(s)
Tune-28702-IgnatiusSancho_CNS_v2.ps 6 PostScript
Tune-28702-IgnatiusSancho_CNS_v2.txt 158 Plain-text file with the extracted tune(s)
Tune-28702-get.log 9279 Log file, useful mostly for debugging
Tune-28704-get.log 5576 Log file, useful mostly for debugging
Tune-28705-get.log 5577 Log file, useful mostly for debugging
Tune-28707-get.log 8939 Log file, useful mostly for debugging
Tune-28709-IgnatiusSancho_MCCD_v1.abc 159 ABC music file with the extracted tune(s)
Tune-28709-IgnatiusSancho_MCCD_v1.ps 6 PostScript
Tune-28709-IgnatiusSancho_MCCD_v1.txt 159 Plain-text file with the extracted tune(s)
Tune-28709-get.log 4364 Log file, useful mostly for debugging
These files should be available for 24 hours.