Error after logging to CMC?

Greetings,

I tried to use the SAP BO/BI to create some kind of reporting and presents data from MySQL database.

So I installed SAP BusinessObjects BI platform 4 free trial, and after installation I open the Central Console Management and I was able to logon using the Administrator user. However, after logging I got a blank page and the following error:

"While trying to invoke the method

com.businessobjects.swd.shared.actioncashe.ICafAction.getProp

erty(com.businessobjects.swd.shared.actioncashe.ICafAction.PropertyKey)

of an object loaded from local variable 'action'  "

Please advise on how to go forward?