[TYPO3-mvc] The default controller can not be determined

[roberto blanko]

Hi,

I just updated from TYPO3 4.4.6 to 4.5. Now my Extbase extension return the
following exception in the frontend:

#1295479650: The default controller can not be determined.
Please check for Tx_Extbase_Utility_Extension::configurePlugin() in your
ext_localconf.php.
Tx_Extbase_MVC_Exception thrown in file
typo3_src/typo3/sysext/extbase/Classes/MVC/Web/RequestBuilder.php in line
142.

The very same extension worked with Extbase shipped with TYPO3 4.4.6.

Tx_Extbase_Utility_Extension::configurePlugin() is of course called
correctly within ext_localconf.php as I didn't change anything.

I already tried to un/install my extension and resave the according Plugin.
No effect.

Debugging showed that

$controllerConfiguration =
$frameworkConfiguration['controllerConfiguration']; (Requestbuilder line
116)

returnes an empty array.

Help would be much appreciated.