Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1808/RSCDS_Graded1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6165-RSCDS_Graded1.ps) >>/Users/jc/w/tmp/Tune-6165-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1808/RSCDS_Graded1.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_61655.log 142894 Log file, useful mostly for debugging
Coll_61658.log 286485 Log file, useful mostly for debugging
Tune-6165-RSCDS_Graded1.abc 150 ABC music file with the extracted tune(s)
Tune-6165-RSCDS_Graded1.ps 6 PostScript
Tune-6165-RSCDS_Graded1.txt 150 Plain-text file with the extracted tune(s)
Tune-6165-get.log 4127 Log file, useful mostly for debugging
Tune-61650-endo.abc 141 ABC music file with the extracted tune(s)
Tune-61650-endo.ps 6 PostScript
Tune-61650-endo.txt 141 Plain-text file with the extracted tune(s)
Tune-61650-get.log 17343 Log file, useful mostly for debugging
Tune-61652-get.log 1450 Log file, useful mostly for debugging
Tune-61655-get.log 3169 Log file, useful mostly for debugging
These files should be available for 24 hours.