[TYPO3] 4.0 Beta 3 - Update Reference Index?

[Bartosz Aninowski]

> "Important notice!
> - The Reference Index table is empty which is likely to be the case 
> because you just upgraded your TYPO3 source. Please to the Tools>DB Check 
> and update the reference index.

I've updated from BETA2 to BETA3.and have no problem.