diff --git a/Sources/Plasma/PubUtilLib/plResMgr/plRegistryKeyList.cpp b/Sources/Plasma/PubUtilLib/plResMgr/plRegistryKeyList.cpp
index 040b60c7..d6a64160 100644
--- a/Sources/Plasma/PubUtilLib/plResMgr/plRegistryKeyList.cpp
+++ b/Sources/Plasma/PubUtilLib/plResMgr/plRegistryKeyList.cpp
@@ -52,7 +52,7 @@ You can contact Cyan Worlds, Inc. by email legal@cyan.com
 plRegistryKeyList::~plRegistryKeyList()
 {
     std::for_each(fKeys.begin(), fKeys.end(),
-        [] (plKeyImp* key) { if (!key->ObjectIsLoaded()) delete key; }
+        [] (plKeyImp* key) { if (key && !key->ObjectIsLoaded()) delete key; }
     );
 }
 
@@ -85,7 +85,7 @@ plKeyImp* plRegistryKeyList::FindKey(const plUoid& uoid) const
         // because of local data. Verify that we have the right key by
         // name, and if it's wrong, do the slower find-by-name.
         plKeyImp *keyImp = fKeys[objectID-1];
-        if (keyImp->GetName().CompareI(uoid.GetObjectName()) != 0)
+        if (!keyImp || keyImp->GetName().CompareI(uoid.GetObjectName()) != 0)
             return FindKey(uoid.GetObjectName());
         else
             return keyImp;
@@ -172,8 +172,9 @@ bool plRegistryKeyList::SetKeyUnused(plKeyImp* key, LoadStatus& loadStatusChange
 
     // Recall that vectors are index zero but normal object IDs are index one...
     else if (id <= fKeys.size()) {
-        if (fKeys[id-1]->GetUoid().GetObjectID() == id)
-            foundKey = fKeys[id-1];
+        plKeyImp* tempKey = fKeys[id-1];
+        if (tempKey && tempKey->GetUoid().GetObjectID() == id)
+            foundKey = tempKey;
     }
 
     // Last chance: do a slow name search for that key.
@@ -203,14 +204,19 @@ void plRegistryKeyList::Read(hsStream* s)
     s->ReadByte();
 
     uint32_t numKeys = s->ReadLE32();
-    fKeys.reserve(numKeys);
+    fKeys.reserve((numKeys * 3) / 2);
 
     for (uint32_t i = 0; i < numKeys; ++i)
     {
         plKeyImp* newKey = new plKeyImp;
         newKey->Read(s);
-        fKeys.push_back(newKey);
+
+        uint32_t id = newKey->GetUoid().GetObjectID();
+        if (fKeys.size() < id)
+            fKeys.resize(id);
+        fKeys[id - 1] = newKey;
     }
+    fKeys.shrink_to_fit();
 }
 
 void plRegistryKeyList::Write(hsStream* s)
@@ -229,7 +235,7 @@ void plRegistryKeyList::Write(hsStream* s)
     for (auto it = fKeys.begin(); it != fKeys.end(); ++it)
     {
         plKeyImp* key = *it;
-        if (key->ObjectIsLoaded())
+        if (key && key->ObjectIsLoaded())
         {
             ++keyCount;
             key->Write(s);