throw new Error(MessageManager.getString("error.implementation_error_cannot_show_view_alignment_frame"));
}
if (tabbedPane != null
- & alignPanels.indexOf(alignmentPanel) != tabbedPane
+ && tabbedPane.getTabCount() > 0
+ && alignPanels.indexOf(alignmentPanel) != tabbedPane
.getSelectedIndex())
{
tabbedPane.setSelectedIndex(alignPanels.indexOf(alignmentPanel));