diff --git a/Sources/Engine/Rendering/RendASER.cpp b/Sources/Engine/Rendering/RendASER.cpp
old mode 100644
new mode 100755
index e5d52b0..7428a11
--- a/Sources/Engine/Rendering/RendASER.cpp
+++ b/Sources/Engine/Rendering/RendASER.cpp
@@ -34,7 +34,6 @@ void CRenderer::AddAddListToActiveList(INDEX iScanLine)
   // allocate space in destination for sum of source and add
   INDEX ctActiveEdges = re_aaceActiveEdges.Count();
   re_aaceActiveEdgesTmp.Push(ctAddEdges+ctActiveEdges);
-
   // check that the add list is sorted right
   #if ASER_EXTREME_CHECKING
   {
@@ -66,18 +65,18 @@ void CRenderer::AddAddListToActiveList(INDEX iScanLine)
   // start at begining of add list, source active list and destination active list
   LISTITER(CAddEdge, ade_lnInAdd) itadeAdd(lhAdd);
   CActiveEdge *paceSrc = &re_aaceActiveEdges[0];
+  CActiveEdge *paceEnd = &re_aaceActiveEdges[re_aaceActiveEdges.Count()-1];
   CActiveEdge *paceDst = &re_aaceActiveEdgesTmp[0];
 
   IFDEBUG(INDEX ctNewActive=0);
   IFDEBUG(INDEX ctOldActive1=0);
   IFDEBUG(INDEX ctOldActive2=0);
-
   // for each edge in add list
   while(!itadeAdd.IsPastEnd()) {
     CAddEdge &ade = *itadeAdd;
 
     // while the edge in active list is left of the edge in add list
-    while (paceSrc->ace_xI.slHolder < itadeAdd->ade_xI.slHolder) {
+    while ((paceSrc->ace_xI.slHolder < ade.ade_xI.slHolder) && (paceSrc!=paceEnd)) {
       // copy the active edge
       ASSERT(paceSrc<=&re_aaceActiveEdges[ctActiveEdges-1]);
       *paceDst++=*paceSrc++;