Error in database toolbox

I got the following error when i try to set a database connection:

Error using matlab.ui.control.internal.controller.ComponentController/executeUserCallback
Error while evaluating Button PrivateButtonPushedFcn.

How can i solve this? It looks like its an issue in the toolbox but its just installed from the mathworks themselves.

[Richard Cui]

Same problem here when tried to use "MySQL Data Source Configuration" from DatabaseExplorer and click the "Test" button. The above errors occurred and the DatabaseExplorer just froze.