Cognos 10.1: In Administration section, after selected Security>System issue

Hi All,

I am using Cognos 10.1 in the project, after logged in System Administration then selected Status>System. After keep on running and later below message in task bar as error.

Webpage error details

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Win64; x64; Trident/4.0; .NET CLR 2.0.50727; SLCC2; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E)
Timestamp: Tue, 2 Dec 2014 06:04:37 UTC

ERROR in Browser Status Bar:
Message: 'fragments[...].windowState' is null or not an object
Line: 23
Char: 2
Code: 0
URI: http://biweb10.ikea.com/ibmcognos/fragments/layout.js

How do resolve the issue and what could be the root cause.
Many thanks in advance to address the query.

Best Regards,
Kumar