Call to undefined method LetoDMS_Core_UserAccess::isAdmin()

[max]

Hey everyone,

I got a major problem with assigning reviewers and approvers, Whenever a reviewer is selected I get the following error:

Code:

Fatal error: Call to undefined method LetoDMS_Core_UserAccess::isAdmin() in /usr/local/apache2/letoDMS/Core/inc.ClassDocument.php on line 1389

I tried replacing my current code with the freshly unzipped one and still the same.

Is this a common bug?
I am running 64bit Ubuntu 10.10 server, PHP 5.3.5; MySQL 5.1 on Apache 2.

Thanks.