We are doing the wireless network now, but there has some problems. After add the plus license we can not add the MSE license at the GUI of WCS., the system tell us “Cannot detect valid MSE”, also at the controller item. We delete the plus license and add it again , its also cannot do. We use the modules:WS-SVC-WISM-1-K9, WSC-STANDARD-K9, WCS-PLUS-100, AIR-MSE-3310-K9, AIR-CAS-1KC-K9, the software : CSACS-4.2-WIN-K9(Cisco Secure ACS 4.2 for Windows) ,WCS( 6.0 for Windows 2003 server) the IOS: MSE( 5.2.91.0) , WISM (4.2.205.0).