Mismatch: X:4 doesn't match requested X:7
X:7 not found in http://john-chambers.us/~jc/music/abc/Contra/RJ/abc/Petronella_RJ.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.60 512x512 ]
filesizedescription
Coll_95951.log 140387 Log file, useful mostly for debugging
Coll_95956.log 4017 Log file, useful mostly for debugging
Form_95954.log 0 Log file, useful mostly for debugging
Tune-9595-Petronella_RJ.abc 0 ABC music file with the extracted tune(s)
Tune-9595-Petronella_RJ.txt 0 Plain-text file with the extracted tune(s)
Tune-9595-get.log 3421 Log file, useful mostly for debugging
Tune-95951-get.log 7087 Log file, useful mostly for debugging
Tune-95951-hamc.abc 311 ABC music file with the extracted tune(s)
Tune-95951-hamc.txt 311 Plain-text file with the extracted tune(s)
Tune-95952-get.log 3608 Log file, useful mostly for debugging
Tune-95956-get.log 5787 Log file, useful mostly for debugging
These files should be available for 24 hours.