Just to let you know:

I have 2 sites on xoops, and on 1 of them I couldn't get a correct update to CBB 3.07. I repeatedly got blank pages on replying and viewing topics.
On my other site things work well !!!
(They are identical, as far as I know; except the content offcourse...)

However, after deleting (not replacing!) the dirs Frameworks and class from root level, and the dirs modules/system and modules/newbb, and after that copiying the same dirs from my well working site, all went OK !!

So now I have 2 well working CBB 3.07.

Apperently they were not totally identical after all....

I hope your problems are solved in the meantime, or that this tip can help you.

Greetz,