Mismatch: X:12 doesn't match requested X:7957
X:7957 not found in http://richardrobinson.tunebook.org.uk/data/tunebook.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.60 512x512 ]
filesizedescription
Form_88979.log 893 Log file, useful mostly for debugging
Tune-88979-get.log 3611128 Log file, useful mostly for debugging
Tune-88979-tunebook.abc 0 ABC music file with the extracted tune(s)
Tune-88979-tunebook.txt 0 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.