I advise you to open a support ticket with McAfee with this. With ePO 4.5, licensing should be checked to allow checking in new MR content. Perhaps when licensing could not be checked it counts the same as it were invalid. They will help you find out why licensing is "in use".
..unless somebody other more knowledgeable knows the answer.
Exactly, ;o)) it's my licensing server for windows Seven KMS..
But before 29/03/2010, the server EPO run fine... i have the repository 5935.0000, i try to move this repository to previous branch and evaluation branch... no chance, it's same result