Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1783/Gow-CR-abc1.abc"

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 ]
filesizedescription
Tune-59973-106_Slip-001.svg 11034 Scalable Vector Graphics format
Tune-59973-106_Slip.abc 220 ABC music file with the extracted tune(s)
Tune-59973-106_Slip.txt 220 Plain-text file with the extracted tune(s)
Tune-59973-Gow-CR-abc1.abc 148 ABC music file with the extracted tune(s)
Tune-59973-Gow-CR-abc1.txt 148 Plain-text file with the extracted tune(s)
Tune-59973-get.log 7212 Log file, useful mostly for debugging
These files should be available for 24 hours.