[TYPO3-dev] FE completly empty after movin TYPO3 and updating

[Andreas Balzer]

Hi! I just moved the whole TYPO3 directory from a subfolder into root 
and installed TYPO3 4.0 over my 3.8.0

Well, the BE works fine and the install tool too, but the FE does not 
output a single byte. The page is just staying empty.

What can I do? I mean there isn't any logfile, or?
I compared the datbases.. ok
I updated in the install script.. ok
I re-created the database relations.. ok

And I changed every path to the root (removed subfolder)
What do i have to do now?

Please help.
Andreas