Thank you for your post, and I apologize for the late reply.
I'm able to access a MySQL table with an underscore in the table name (LINE_ITEMS), as an underscore is the recommended use for separating two (or more) words in a table name. Are you saying this works correctly if an underscore is not used?
I do not know anything about a "Ubuntu" server. If you install MySQL on another server, do you still encounter the same error?
I realize some time has passed, so if you have since found a solution, please post here so others can benefit.