Mismatch: X:1 doesn't match requested X:3
Mismatch: X:1 doesn't match requested X:3
Mismatch: X:1 doesn't match requested X:3
X:3 not found in http://john-chambers.us/~jc/music/session/Intl/waltz/Metsäkukkia-Gm,Am,Dm-96-4.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_49962.log 479 Log file, useful mostly for debugging
Tune-49962-Mets.abc 0 ABC music file with the extracted tune(s)
Tune-49962-Mets.txt 0 Plain-text file with the extracted tune(s)
Tune-49962-get.log 9001 Log file, useful mostly for debugging
These files should be available for 24 hours.