Base used to work, now when I start it it wants to create a new data base the starts and shuts down

Using unbuntu 17.10


Any changes since it last worked? New LO version? Change from 32 to 64 bit? Is Java installed & settings correct in Tools->Options -> LibreOffice-> Advanced? Current LO version number- and please don’t say latest. When you state it starts & shuts down, what does this mean? Do you actually go through some of the steps in the process?