Error while browsing for a computer when creating a configur

Error while browsing for a computer when creating a configur

I am using the free edition for Desktop central, but I used the trial version until now and this error come out after the trial expired:

Unknown Error occurred (1002)
Error Message:

java.lang.IllegalArgumentException: Unknown column GUID in the table Resource

A full print screen of the problem :

http://img406.imageshack.us/my.php?image=20080110085115or9.jpg


Stefan











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