get lot of warnings - and flexi access does not seem to work

I have upgraded to the required version (the one you download when you click on FC152-r185) of flexicontent and upgraded flexiaccess to version 1.0.4a but I still have these warnings in the backend.

I also got a php-errormessage from helper.php when upgrading. But after a refresh I got the message that flexiaccess was succesfully installed.

Flexiaccess seems to work fine but I'm a bit troubled by the errormessages since I want to put the site in production next friday. Is there a way to suppress these messages, or is there something else I can do?
I already have a groupstructure for flexiaccess.