Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1818/Kerr_MM2-V1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2498-Kerr_MM2-V1.ps) >>/Users/jc/w/tmp/Tune-2498-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1818/Kerr_MM2-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-2498-Kerr_MM2-V1.abc 148 ABC music file with the extracted tune(s)
Tune-2498-Kerr_MM2-V1.ps 6 PostScript
Tune-2498-Kerr_MM2-V1.txt 148 Plain-text file with the extracted tune(s)
Tune-2498-get.log 4089 Log file, useful mostly for debugging
Tune-24980-CDfNH1783.abc 146 ABC music file with the extracted tune(s)
Tune-24980-CDfNH1783.txt 146 Plain-text file with the extracted tune(s)
Tune-24980-get.log 3168 Log file, useful mostly for debugging
Tune-24985-get.log 3791 Log file, useful mostly for debugging
Tune-24987-20401_Downfall_of_Paris.abc 1089 ABC music file with the extracted tune(s)
Tune-24987-20401_Downfall_of_Paris.ps 42439 PostScript
Tune-24987-20401_Downfall_of_Paris.txt 1089 Plain-text file with the extracted tune(s)
Tune-24987-get.log 10504 Log file, useful mostly for debugging
Tune-24988-BB50.abc 141 ABC music file with the extracted tune(s)
Tune-24988-BB50.pdf 2217 Portable Data Format
Tune-24988-BB50.ps 6 PostScript
Tune-24988-BB50.txt 141 Plain-text file with the extracted tune(s)
Tune-24988-get.log 4710 Log file, useful mostly for debugging
These files should be available for 24 hours.