Closes #855: Don't try to look up bone if there's no skeleton

components/nifogre/ogrenifloader.cpp

@@ -1000,9 +1000,12 @@ class NIFObjectLoader
             {
                 const Nif::NiTextKeyExtraData *tk = static_cast<const Nif::NiTextKeyExtraData*>(e.getPtr());
 
+                if (scene->mSkelBase)
+                {
                     int trgtid = NIFSkeletonLoader::lookupOgreBoneHandle(name, node->recIndex);
                     extractTextKeys(tk, scene->mTextKeys[trgtid]);
                 }
+            }
             else if(e->recType == Nif::RC_NiStringExtraData)
             {
                 const Nif::NiStringExtraData *sd = static_cast<const Nif::NiStringExtraData*>(e.getPtr());