1 files changed, 5 insertions, 1 deletions

diff --git a/linden/indra/llmath/llcoordframe.cpp b/linden/indra/llmath/llcoordframe.cpp
index 6d18c8b..0196424 100644
--- a/linden/indra/llmath/llcoordframe.cpp
+++ b/linden/indra/llmath/llcoordframe.cpp
@@ -730,7 +730,11 @@ void LLCoordFrame::lookDir(const LLVector3 &at, const LLVector3 &up_direction)
         left.normVec();
 
         LLVector3 up = at % left;
-        setAxes(at, left, up);
+
+        if (at.isFinite() && left.isFinite() && up.isFinite())
+        {
+                setAxes(at, left, up);
+        }
 }
 
 void LLCoordFrame::lookDir(const LLVector3 &xuv)