LibreOffice Base and Draw don't open in Win 8.1

I’ve just installed LibreOffice Base and Draw to Windows 8.1 but they won’t open. I can either try open it by opening a file, e.g. an access or visio file, or directly with the programs themselves but it basically just brings up the ‘doing something’ icon (small circle thing) and then stops and doesn’t open anything.

I’ve tried finding similar issues but cannot see any other issues that might help.

Any ideas?

Is Java installed? Base requires Java.

Thanks for the reply - I think Java was installed but I just reinstalled it anyway. No luck. Bit flummoxed really.