diff --git a/org.adempiere.base/src/org/compiere/db/CreateAdempiere.java b/org.adempiere.base/src/org/compiere/db/CreateAdempiere.java
index fa1b96dffe..a74c73d929 100644
--- a/org.adempiere.base/src/org/compiere/db/CreateAdempiere.java
+++ b/org.adempiere.base/src/org/compiere/db/CreateAdempiere.java
@@ -417,7 +417,7 @@ public class CreateAdempiere
 				if (def != null)
 				{
 					//jz: replace '' to \', otherwise exception
-					def.replaceAll("''", "\\'");
+					def = def.replaceAll("''", "\\'");
 					sb.append(" DEFAULT ").append(def);
 				}
 				//	Null
diff --git a/org.adempiere.base/src/org/compiere/model/GridTabVO.java b/org.adempiere.base/src/org/compiere/model/GridTabVO.java
index 8b6528c55d..5ccb0e36ca 100644
--- a/org.adempiere.base/src/org/compiere/model/GridTabVO.java
+++ b/org.adempiere.base/src/org/compiere/model/GridTabVO.java
@@ -214,8 +214,8 @@ public class GridTabVO implements Evaluatee, Serializable
 			if (vo.WhereClause == null)
 				vo.WhereClause = "";
 			//jz col=null not good for Derby
-			if (vo.WhereClause.indexOf("=null")>0)
-				vo.WhereClause.replaceAll("=null", " IS NULL ");
+			if (vo.WhereClause.indexOf("=null")>0)				
+				vo.WhereClause = vo.WhereClause.replaceAll("=null", " IS NULL ");
 			// Where Clauses should be surrounded by parenthesis - teo_sarca, BF [ 1982327 ] 
 			if (vo.WhereClause.trim().length() > 0) {
 				vo.WhereClause = "("+vo.WhereClause+")";
diff --git a/org.adempiere.base/src/org/globalqss/process/CashFlow.java b/org.adempiere.base/src/org/globalqss/process/CashFlow.java
index d107b980bd..98a763ffb4 100644
--- a/org.adempiere.base/src/org/globalqss/process/CashFlow.java
+++ b/org.adempiere.base/src/org/globalqss/process/CashFlow.java
@@ -225,7 +225,7 @@ public class CashFlow  extends SvrProcess {
 					open = open.subtract(paid);
 				}
 				if (open.scale() > curr.getStdPrecision())
-					open.setScale(curr.getStdPrecision(), BigDecimal.ROUND_HALF_UP);
+					open = open.setScale(curr.getStdPrecision(), BigDecimal.ROUND_HALF_UP);
 				BigDecimal invoiced = order.getGrandTotal().subtract(open);
 				if (isPaySchedule) {
 					MOrderPaySchedule[] schedule = MOrderPaySchedule.getOrderPaySchedule(getCtx(), order_id, 0, get_TrxName());