diff --git a/Sources/Plasma/PubUtilLib/plPhysical/plCollisionDetector.cpp b/Sources/Plasma/PubUtilLib/plPhysical/plCollisionDetector.cpp
index cf03b0b9..57a3648d 100644
--- a/Sources/Plasma/PubUtilLib/plPhysical/plCollisionDetector.cpp
+++ b/Sources/Plasma/PubUtilLib/plPhysical/plCollisionDetector.cpp
@@ -73,9 +73,6 @@ You can contact Cyan Worlds, Inc. by email legal@cyan.com
 
 plArmatureMod* plCollisionDetector::IGetAvatarModifier(plKey key)
 {
-    if (!key)
-        return nil;
-
     plSceneObject* avObj = plSceneObject::ConvertNoRef(key->ObjectIsLoaded());
     if (avObj)
     {
@@ -245,6 +242,8 @@ plCameraRegionDetector::~plCameraRegionDetector()
 
 void plCameraRegionDetector::ITrigger(plKey hitter, bool entering, bool immediate)
 {
+    if (fSavingSendMsg)
+        DetectorLogRed("%s: Stale messages on ITrigger. This should never happen!", GetKeyName().c_str());
     if (fIsInside && entering)
         DetectorLogRed("%s: Duplicate enter! Did we miss an exit?", GetKeyName().c_str());
     else if (!fIsInside && !entering)
@@ -385,18 +384,11 @@ hsBool plObjectInVolumeDetector::MsgReceive(plMessage* msg)
     plCollideMsg* pCollMsg = plCollideMsg::ConvertNoRef(msg);
     if (pCollMsg)
     {
-        fLastHitter = pCollMsg->fOtherKey;
         // If the avatar is disabled (flying around), don't trigger
-        if (IIsDisabledAvatar(fLastHitter))
+        if (IIsDisabledAvatar(pCollMsg->fOtherKey))
             return false;
-        ITrigger(fLastHitter, (pCollMsg->fEntering != 0));
-
-        // If we never eval before the exit...
-        if (fWaitingForEval)
-            plgDispatch::Dispatch()->UnRegisterForExactType(plEvalMsg::Index(), GetKey());
-        else
-            plgDispatch::Dispatch()->RegisterForExactType(plEvalMsg::Index(), GetKey());
-        fWaitingForEval = !fWaitingForEval;
+        ITrigger(pCollMsg->fOtherKey, (pCollMsg->fEntering != 0));
+        plgDispatch::Dispatch()->RegisterForExactType(plEvalMsg::Index(), GetKey());
         return true;
     }
 
@@ -404,13 +396,8 @@ hsBool plObjectInVolumeDetector::MsgReceive(plMessage* msg)
     if (pEvalMsg)
     {
         fNumEvals++;
-        // Don't dispatch if we're not in the age
-        if (plArmatureMod* av = IGetAvatarModifier(fLastHitter))
-            if (av->IsMidLink())
-                return true;
         ISendSavedTriggerMsgs();
         plgDispatch::Dispatch()->UnRegisterForExactType(plEvalMsg::Index(), GetKey());
-        fWaitingForEval = false;
     }
 
     plPlayerPageMsg* pageMsg = plPlayerPageMsg::ConvertNoRef(msg);
diff --git a/Sources/Plasma/PubUtilLib/plPhysical/plCollisionDetector.h b/Sources/Plasma/PubUtilLib/plPhysical/plCollisionDetector.h
index 623b716a..f2fa65ea 100644
--- a/Sources/Plasma/PubUtilLib/plPhysical/plCollisionDetector.h
+++ b/Sources/Plasma/PubUtilLib/plPhysical/plCollisionDetector.h
@@ -99,19 +99,15 @@ protected:
     uint32_t fNumEvals;
     uint32_t fLastEnterEval;
     uint32_t fLastExitEval;
-    bool     fWaitingForEval;
-    plKey    fLastHitter;
 
 public:
     
     plObjectInVolumeDetector() 
-        : plCollisionDetector(), fSavedActivatorMsg(nil), fNumEvals(0), fLastEnterEval(0),
-          fWaitingForEval(false), fLastHitter(nil)
+        : plCollisionDetector(), fSavedActivatorMsg(nil), fNumEvals(0), fLastEnterEval(0), fLastExitEval(0) 
     { }
 
     plObjectInVolumeDetector(int8_t type) 
-        : plCollisionDetector(type), fSavedActivatorMsg(nil), fNumEvals(0), fLastEnterEval(0),
-          fWaitingForEval(false), fLastHitter(nil)
+        : plCollisionDetector(type), fSavedActivatorMsg(nil), fNumEvals(0), fLastEnterEval(0), fLastExitEval(0) 
     { }
 
     virtual ~plObjectInVolumeDetector() { }