[TYPO3] Update typo3 4.0 PageProperties: Fatal error

[Ralph Brugger]

Hallo,

I've updated typo3 from version 3.8.1 to version 4.0 on some servers.

I'm working with TemplaVoila

Today I've changes one of my TV templates. I've added to new elements.

After that I've changed the page properties to use the changed TV
template. This was OK for so far.

Now I want to change the properties og that page, but I can't change the
page properties again:

Warning: array_unique(): The argument should be an array in
/home/bobsadbw/www.bobsairport.de/t3lib/class.t3lib_tceforms.php on line
2075

Warning: in_array(): Wrong datatype for second argument in
/home/bobsadbw/www.bobsairport.de/t3lib/class.t3lib_tceforms.php on line
2086

Fatal error: Only variables can be passed by reference in
/home/bobsadbw/www.bobsairport.de/t3lib/class.t3lib_tceforms.php on line
2087

That's really an fatal error, cause I can't change the page properties
any mor!

What can I do?

Restoire my backup og the typo3 database form staturday and restore the
wohle typo3 installtion?

Thanks for any help!

Ralph