Error with Search field

[Alinea3]

Hello,
I've got some troubles with Croogo 2.0.0 when I perform a search from Contact page (or other pages that it s not node page)
This following error occur.

Notice (8): Undefined index: Node [APP/Plugin/Search/Model/Behavior/SearchableBehavior.php, line 106]
Warning (2): array_keys() expects parameter 1 to be array, null given [APP/Plugin/Search/Model/Behavior/SearchableBehavior.php, line 106]
Warning (2): Invalid argument supplied for foreach() [APP/Plugin/Search/Model/Behavior/SearchableBehavior.php, line 107]
Notice (8): Undefined index: Node [APP/Plugin/Search/Controller/Component/PrgComponent.php, line 358]
Warning (4096): Argument 1 passed to PrgComponent::serializeParams() must be of the type array, null given, called in /apps/site/200_PPR/Plugin/Search/Controller/Component/PrgComponent.php on line 359 and defined [APP/Plugin/Search/Controller/Component/PrgComponent.php, line 237]
Warning (2): array_merge(): Argument #2 is not an array [APP/Plugin/Search/Controller/Component/PrgComponent.php, line 383]
Warning (4096): Argument 1 passed to PrgComponent::exclude() must be of the type array, null given, called in /apps/site/200_PPR/Plugin/Search/Controller/Component/PrgComponent.php on line 384 and defined [APP/Plugin/Search/Controller/Component/PrgComponent.php, line 294]
Warning (2): Invalid argument supplied for foreach() [APP/Plugin/Search/Controller/Component/PrgComponent.php, line 296]