diff -ru OOO310_m1/formula/source/ui/dlg/formula.cxx OOO310_m1/formula/source/ui/dlg/formula.cxx
--- OOO310_m1.orig/formula/source/ui/dlg/formula.cxx	2009-02-17 09:00:06.000000000 +0000
+++ OOO310_m1/formula/source/ui/dlg/formula.cxx	2009-02-17 09:06:18.000000000 +0000
@@ -131,7 +131,7 @@
 	    void			UpdateFunctionDesc();
 	    void			ResizeArgArr( const IFunctionDescription* pNewFunc );
 	    void			FillListboxes();
-	    void			FillControls();
+	    void			FillControls(BOOL &rbNext, BOOL &rbPrev);
 
         FormulaDlgMode  SetMeText(const String& _sText,xub_StrLen PrivStart, xub_StrLen PrivEnd,BOOL bMatrix,BOOL _bSelect,BOOL _bUpdate);
         void            SetMeText(const String& _sText);
@@ -756,9 +756,15 @@
 
 void FormulaDlg_Impl::FillDialog(BOOL nFlag)
 {
-	if ( nFlag ) 
-        FillControls();
+	BOOL bNext=TRUE, bPrev=TRUE;
+	if(nFlag)
+		FillControls(bNext, bPrev);
 	FillListboxes();
+	if(nFlag)
+	{
+		aBtnBackward.Enable(bPrev);
+		aBtnForward.Enable(bNext);
+	}
 
 	String aStrResult;
 
@@ -806,7 +812,7 @@
 	m_pParent->SetUniqueId( nOldUnique );
 }
 // -----------------------------------------------------------------------------
-void FormulaDlg_Impl::FillControls()
+void FormulaDlg_Impl::FillControls(BOOL &rbNext, BOOL &rbPrev)
 {
 	//	Umschalten zwischen den "Seiten"
     FormEditData* pData = m_pHelper->getFormEditData();
@@ -902,12 +908,10 @@
 		//	Test, ob vorne/hinten noch mehr Funktionen sind
 
 	xub_StrLen nTempStart = m_aFormulaHelper.GetArgStart( aFormula, nFStart, 0 );
-	BOOL bNext = m_aFormulaHelper.GetNextFunc( aFormula, FALSE, nTempStart );
+	rbNext = m_aFormulaHelper.GetNextFunc( aFormula, FALSE, nTempStart );
 	nTempStart=(xub_StrLen)pMEdit->GetSelection().Min();
 	pData->SetFStart(nTempStart);
-	BOOL bPrev = m_aFormulaHelper.GetNextFunc( aFormula, TRUE, nTempStart );
-	aBtnBackward.Enable(bPrev);
-	aBtnForward.Enable(bNext);
+	rbPrev = m_aFormulaHelper.GetNextFunc( aFormula, TRUE, nTempStart );
 }
 // -----------------------------------------------------------------------------