Cannot open SignalTap II

Hi

When I open the Signaltap II, the Quartus II collapse.

Anyone help shed a light ?

Thanks .... a lot !

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*** Fatal Error: Access Violation at 0X14E47BA3

Module: quartus.exe

Stack Trace:

0xd7ba2: SEDQ_FRAME_WND::SEDQ_FRAME_WND + 0xf2 (sld_sedq)

0xdc30f: _sld_sedq_create_frame_wnd + 0x8f (sld_sedq)

0x4de68: QUI_FRAME_MGR::create_frame_wnd + 0x158 (SYS_QUI)

0x6a5bf: QUI_FRAME_MGR::create_frame_wnd + 0x3cf (SYS_QUI)

0x70c9c: QUI_FRAME_MGR::open_file + 0x38c (SYS_QUI)

0x77202: QUI_TOOLS_MENU::sedq_action + 0x1c2 (SYS_QUI)

0x8ba1: QUI_TOOLS_MENU::qt_metacall + 0x2d1 (SYS_QUI)

0xe0eae: QMetaObject::metacall + 0x3e (QtCore4)

0xc57d: QAction::activate + 0xcd (QtGui4)

0x348a28: QMenu::findIdForAction + 0x288 (QtGui4)

0x34e500: QMenu::internalDelayedPopup + 0x680 (QtGui4)

End-trace

Quartus II 32-bit Version 11.1 Build 173 11/01/2011 SJ Full Version

Service Pack Installed: 0.01,0.155