Can't move focus to the control because it is invisible, not enabled, or of a type that does not accept the focus.

there is a TablayoutPanel tabLayoutPanel, and FocusPanel SSearchDetailResult

there is a button in the first tab of tabLayoutPanel and when press that button, I want the focuspanel tab is selected, so I write
[code]
SSearchDetailResult sSearchDetailResult = new SSearchDetailResult();
tabLayoutPanel.add(sSearchDetailResult, "Detail");
sSearchDetailResult.setVisible(true);
tabLayoutPanel.selectTab(sSearchDetailResult);
// tabLayoutPanel.selectTab(1);
[/code]

the result is the sSearchDetailResult can be selected, but there is error in eclipse development tab as follow:

JavascriptException: (Error): Can't move focus to the control because it is invisible, not enabled, or of a type that does not accept the focus.

what is the problem come from?!!

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