Nice bio. I like it. But I think your problem may be the references to Data. The canon names of characters are not allowed by the naming filter and hence may also be disallowed in the bios. Try removing Data's name and submitting it. I bet it goes through fine.
Of course, I realize that the bio may not make any sense once you do that, but then at least you'll know the problem and maybe figure out a way to work around it.