Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/GM/Don_Jumpedo.abc/1750"

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 ]
filesizedescription
Coll_6198.log 424094 Log file, useful mostly for debugging
Coll_61981.log 6405 Log file, useful mostly for debugging
Coll_61985.log 261851 Log file, useful mostly for debugging
Find_61987.log 1518 Log file, useful mostly for debugging
Tune-6198-1750.abc 151 ABC music file with the extracted tune(s)
Tune-6198-1750.txt 151 Plain-text file with the extracted tune(s)
Tune-6198-get.log 3053 Log file, useful mostly for debugging
Tune-61983-get.log 3565 Log file, useful mostly for debugging
Tune-61985-006_Harlequin_Tune.abc 563 ABC music file with the extracted tune(s)
Tune-61985-006_Harlequin_Tune.pdf 12564 Portable Data Format
Tune-61985-006_Harlequin_Tune.ps 34748 PostScript
Tune-61985-006_Harlequin_Tune.txt 563 Plain-text file with the extracted tune(s)
Tune-61985-get.log 5544 Log file, useful mostly for debugging
These files should be available for 24 hours.