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diff --git a/indra/newview/llinventoryobserver.cpp b/indra/newview/llinventoryobserver.cpp
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+++ b/indra/newview/llinventoryobserver.cpp
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+/** 
+ * @file llinventoryobserver.cpp
+ * @brief Implementation of the inventory observers used to track agent inventory.
+ *
+ * $LicenseInfo:firstyear=2002&license=viewergpl$
+ * 
+ * Copyright (c) 2002-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#include "llviewerprecompiledheaders.h"
+
+#include "llinventoryobserver.h"
+
+#include "llassetstorage.h"
+#include "llcrc.h"
+#include "lldir.h"
+#include "llsys.h"
+#include "llxfermanager.h"
+#include "message.h"
+
+#include "llagent.h"
+#include "llagentwearables.h"
+#include "llfloater.h"
+#include "llfocusmgr.h"
+#include "llinventorybridge.h"
+#include "llinventoryfunctions.h"
+#include "llinventorymodel.h"
+#include "llviewermessage.h"
+#include "llviewerwindow.h"
+#include "llviewerregion.h"
+#include "llappviewer.h"
+#include "lldbstrings.h"
+#include "llviewerstats.h"
+#include "llmutelist.h"
+#include "llnotificationsutil.h"
+#include "llcallbacklist.h"
+#include "llpreview.h"
+#include "llviewercontrol.h"
+#include "llvoavatarself.h"
+#include "llsdutil.h"
+#include <deque>
+
+LLInventoryObserver::LLInventoryObserver()
+{
+}
+
+// virtual
+LLInventoryObserver::~LLInventoryObserver()
+{
+}
+
+void LLInventoryCompletionObserver::changed(U32 mask)
+{
+	// scan through the incomplete items and move or erase them as
+	// appropriate.
+	if(!mIncomplete.empty())
+	{
+		for(item_ref_t::iterator it = mIncomplete.begin(); it < mIncomplete.end(); )
+		{
+			LLViewerInventoryItem* item = gInventory.getItem(*it);
+			if(!item)
+			{
+				it = mIncomplete.erase(it);
+				continue;
+			}
+			if(item->isComplete())
+			{
+				mComplete.push_back(*it);
+				it = mIncomplete.erase(it);
+				continue;
+			}
+			++it;
+		}
+		if(mIncomplete.empty())
+		{
+			done();
+		}
+	}
+}
+
+void LLInventoryCompletionObserver::watchItem(const LLUUID& id)
+{
+	if(id.notNull())
+	{
+		mIncomplete.push_back(id);
+	}
+}
+
+
+void LLInventoryFetchObserver::changed(U32 mask)
+{
+	// scan through the incomplete items and move or erase them as
+	// appropriate.
+	if(!mIncomplete.empty())
+	{
+		for(item_ref_t::iterator it = mIncomplete.begin(); it < mIncomplete.end(); )
+		{
+			LLViewerInventoryItem* item = gInventory.getItem(*it);
+			if(!item)
+			{
+				if (mRetryIfMissing)
+				{
+					// BAP changed to skip these items, so we should keep retrying until they arrive.
+					// Did not make this the default behavior because of uncertainty about impact -
+					// could cause some observers that currently complete to wait forever.
+					++it;
+				}
+				else
+				{
+					// BUG: This can cause done() to get called prematurely below.
+					// This happens with the LLGestureInventoryFetchObserver that
+					// loads gestures at startup. JC
+					it = mIncomplete.erase(it);
+				}
+				continue;
+			}
+			if(item->isComplete())
+			{
+				mComplete.push_back(*it);
+				it = mIncomplete.erase(it);
+				continue;
+			}
+			++it;
+		}
+		if(mIncomplete.empty())
+		{
+			done();
+		}
+	}
+	//llinfos << "LLInventoryFetchObserver::changed() mComplete size " << mComplete.size() << llendl;
+	//llinfos << "LLInventoryFetchObserver::changed() mIncomplete size " << mIncomplete.size() << llendl;
+}
+
+bool LLInventoryFetchObserver::isEverythingComplete() const
+{
+	return mIncomplete.empty();
+}
+
+void fetch_items_from_llsd(const LLSD& items_llsd)
+{
+	if (!items_llsd.size()) return;
+	LLSD body;
+	body[0]["cap_name"] = "FetchInventory";
+	body[1]["cap_name"] = "FetchLib";
+	for (S32 i=0; i<items_llsd.size();i++)
+	{
+		if (items_llsd[i]["owner_id"].asString() == gAgent.getID().asString())
+		{
+			body[0]["items"].append(items_llsd[i]);
+			continue;
+		}
+		if (items_llsd[i]["owner_id"].asString() == ALEXANDRIA_LINDEN_ID.asString())
+		{
+			body[1]["items"].append(items_llsd[i]);
+			continue;
+		}
+	}
+		
+	for (S32 i=0; i<body.size(); i++)
+	{
+		if (0 >= body[i].size()) continue;
+		std::string url = gAgent.getRegion()->getCapability(body[i]["cap_name"].asString());
+
+		if (!url.empty())
+		{
+			body[i]["agent_id"]	= gAgent.getID();
+			LLHTTPClient::post(url, body[i], new LLInventoryModel::fetchInventoryResponder(body[i]));
+			break;
+		}
+
+		LLMessageSystem* msg = gMessageSystem;
+		BOOL start_new_message = TRUE;
+		for (S32 j=0; j<body[i]["items"].size(); j++)
+		{
+			LLSD item_entry = body[i]["items"][j];
+			if(start_new_message)
+			{
+				start_new_message = FALSE;
+				msg->newMessageFast(_PREHASH_FetchInventory);
+				msg->nextBlockFast(_PREHASH_AgentData);
+				msg->addUUIDFast(_PREHASH_AgentID, gAgent.getID());
+				msg->addUUIDFast(_PREHASH_SessionID, gAgent.getSessionID());
+			}
+			msg->nextBlockFast(_PREHASH_InventoryData);
+			msg->addUUIDFast(_PREHASH_OwnerID, item_entry["owner_id"].asUUID());
+			msg->addUUIDFast(_PREHASH_ItemID, item_entry["item_id"].asUUID());
+			if(msg->isSendFull(NULL))
+			{
+				start_new_message = TRUE;
+				gAgent.sendReliableMessage();
+			}
+		}
+		if(!start_new_message)
+		{
+			gAgent.sendReliableMessage();
+		}
+	}
+}
+
+void LLInventoryFetchObserver::fetchItems(
+	const LLInventoryFetchObserver::item_ref_t& ids)
+{
+	LLUUID owner_id;
+	LLSD items_llsd;
+	for(item_ref_t::const_iterator it = ids.begin(); it < ids.end(); ++it)
+	{
+		LLViewerInventoryItem* item = gInventory.getItem(*it);
+		if(item)
+		{
+			if(item->isComplete())
+			{
+				// It's complete, so put it on the complete container.
+				mComplete.push_back(*it);
+				continue;
+			}
+			else
+			{
+				owner_id = item->getPermissions().getOwner();
+			}
+		}
+		else
+		{
+			// assume it's agent inventory.
+			owner_id = gAgent.getID();
+		}
+		
+		// It's incomplete, so put it on the incomplete container, and
+		// pack this on the message.
+		mIncomplete.push_back(*it);
+		
+		// Prepare the data to fetch
+		LLSD item_entry;
+		item_entry["owner_id"] = owner_id;
+		item_entry["item_id"] = (*it);
+		items_llsd.append(item_entry);
+	}
+	fetch_items_from_llsd(items_llsd);
+}
+
+// virtual
+void LLInventoryFetchDescendentsObserver::changed(U32 mask)
+{
+	for(folder_ref_t::iterator it = mIncompleteFolders.begin(); it < mIncompleteFolders.end();)
+	{
+		LLViewerInventoryCategory* cat = gInventory.getCategory(*it);
+		if(!cat)
+		{
+			it = mIncompleteFolders.erase(it);
+			continue;
+		}
+		if(isComplete(cat))
+		{
+			mCompleteFolders.push_back(*it);
+			it = mIncompleteFolders.erase(it);
+			continue;
+		}
+		++it;
+	}
+	if(mIncompleteFolders.empty())
+	{
+		done();
+	}
+}
+
+void LLInventoryFetchDescendentsObserver::fetchDescendents(
+	const folder_ref_t& ids)
+{
+	for(folder_ref_t::const_iterator it = ids.begin(); it != ids.end(); ++it)
+	{
+		LLViewerInventoryCategory* cat = gInventory.getCategory(*it);
+		if(!cat) continue;
+		if(!isComplete(cat))
+		{
+			cat->fetchDescendents();		//blindly fetch it without seeing if anything else is fetching it.
+			mIncompleteFolders.push_back(*it);	//Add to list of things being downloaded for this observer.
+		}
+		else
+		{
+			mCompleteFolders.push_back(*it);
+		}
+	}
+}
+
+bool LLInventoryFetchDescendentsObserver::isEverythingComplete() const
+{
+	return mIncompleteFolders.empty();
+}
+
+bool LLInventoryFetchDescendentsObserver::isComplete(LLViewerInventoryCategory* cat)
+{
+	const S32 version = cat->getVersion();
+	const S32 expected_num_descendents = cat->getDescendentCount();
+	if ((version == LLViewerInventoryCategory::VERSION_UNKNOWN) ||
+		(expected_num_descendents == LLViewerInventoryCategory::DESCENDENT_COUNT_UNKNOWN))
+	{
+		return false;
+	}
+	// it might be complete - check known descendents against
+	// currently available.
+	LLInventoryModel::cat_array_t* cats;
+	LLInventoryModel::item_array_t* items;
+	gInventory.getDirectDescendentsOf(cat->getUUID(), cats, items);
+	if(!cats || !items)
+	{
+		llwarns << "Category '" << cat->getName() << "' descendents corrupted, fetch failed." << llendl;
+		// NULL means the call failed -- cats/items map doesn't exist (note: this does NOT mean
+		// that the cat just doesn't have any items or subfolders).
+		// Unrecoverable, so just return done so that this observer can be cleared
+		// from memory.
+		return true;
+	}
+	const S32 current_num_known_descendents = cats->count() + items->count();
+	
+	// Got the number of descendents that we were expecting, so we're done.
+	if (current_num_known_descendents == expected_num_descendents)
+	{
+		return true;
+	}
+
+	// Error condition, but recoverable.  This happens if something was added to the
+	// category before it was initialized, so accountForUpdate didn't update descendent
+	// count and thus the category thinks it has fewer descendents than it actually has.
+	if (current_num_known_descendents >= expected_num_descendents)
+	{
+		llwarns << "Category '" << cat->getName() << "' expected descendentcount:" << expected_num_descendents << " descendents but got descendentcount:" << current_num_known_descendents << llendl;
+		cat->setDescendentCount(current_num_known_descendents);
+		return true;
+	}
+	return false;
+}
+
+void LLInventoryFetchComboObserver::changed(U32 mask)
+{
+	if(!mIncompleteItems.empty())
+	{
+		for(item_ref_t::iterator it = mIncompleteItems.begin(); it < mIncompleteItems.end(); )
+		{
+			LLViewerInventoryItem* item = gInventory.getItem(*it);
+			if(!item)
+			{
+				it = mIncompleteItems.erase(it);
+				continue;
+			}
+			if(item->isComplete())
+		{	
+				mCompleteItems.push_back(*it);
+				it = mIncompleteItems.erase(it);
+				continue;
+			}
+			++it;
+		}
+	}
+	if(!mIncompleteFolders.empty())
+	{
+		for(folder_ref_t::iterator it = mIncompleteFolders.begin(); it < mIncompleteFolders.end();)
+		{
+			LLViewerInventoryCategory* cat = gInventory.getCategory(*it);
+			if(!cat)
+			{
+				it = mIncompleteFolders.erase(it);
+				continue;
+			}
+			if(gInventory.isCategoryComplete(*it))
+			{
+				mCompleteFolders.push_back(*it);
+				it = mIncompleteFolders.erase(it);
+				continue;
+			}
+			++it;
+		}
+	}
+	if(!mDone && mIncompleteItems.empty() && mIncompleteFolders.empty())
+	{
+		mDone = true;
+		done();
+	}
+}
+
+void LLInventoryFetchComboObserver::fetch(
+	const folder_ref_t& folder_ids,
+	const item_ref_t& item_ids)
+{
+	lldebugs << "LLInventoryFetchComboObserver::fetch()" << llendl;
+	for(folder_ref_t::const_iterator fit = folder_ids.begin(); fit != folder_ids.end(); ++fit)
+	{
+		LLViewerInventoryCategory* cat = gInventory.getCategory(*fit);
+		if(!cat) continue;
+		if(!gInventory.isCategoryComplete(*fit))
+		{
+			cat->fetchDescendents();
+			lldebugs << "fetching folder " << *fit <<llendl;
+			mIncompleteFolders.push_back(*fit);
+		}
+		else
+		{
+			mCompleteFolders.push_back(*fit);
+			lldebugs << "completing folder " << *fit <<llendl;
+		}
+	}
+
+	// Now for the items - we fetch everything which is not a direct
+	// descendent of an incomplete folder because the item will show
+	// up in an inventory descendents message soon enough so we do not
+	// have to fetch it individually.
+	LLSD items_llsd;
+	LLUUID owner_id;
+	for(item_ref_t::const_iterator iit = item_ids.begin(); iit != item_ids.end(); ++iit)
+	{
+		LLViewerInventoryItem* item = gInventory.getItem(*iit);
+		if(!item)
+		{
+			lldebugs << "uanble to find item " << *iit << llendl;
+			continue;
+		}
+		if(item->isComplete())
+		{
+			// It's complete, so put it on the complete container.
+			mCompleteItems.push_back(*iit);
+			lldebugs << "completing item " << *iit << llendl;
+			continue;
+		}
+		else
+		{
+			mIncompleteItems.push_back(*iit);
+			owner_id = item->getPermissions().getOwner();
+		}
+		if(std::find(mIncompleteFolders.begin(), mIncompleteFolders.end(), item->getParentUUID()) == mIncompleteFolders.end())
+		{
+			LLSD item_entry;
+			item_entry["owner_id"] = owner_id;
+			item_entry["item_id"] = (*iit);
+			items_llsd.append(item_entry);
+		}
+		else
+		{
+			lldebugs << "not worrying about " << *iit << llendl;
+		}
+	}
+	fetch_items_from_llsd(items_llsd);
+}
+
+void LLInventoryExistenceObserver::watchItem(const LLUUID& id)
+{
+	if(id.notNull())
+	{
+		mMIA.push_back(id);
+	}
+}
+
+void LLInventoryExistenceObserver::changed(U32 mask)
+{
+	// scan through the incomplete items and move or erase them as
+	// appropriate.
+	if(!mMIA.empty())
+	{
+		for(item_ref_t::iterator it = mMIA.begin(); it < mMIA.end(); )
+		{
+			LLViewerInventoryItem* item = gInventory.getItem(*it);
+			if(!item)
+			{
+				++it;
+				continue;
+			}
+			mExist.push_back(*it);
+			it = mMIA.erase(it);
+		}
+		if(mMIA.empty())
+		{
+			done();
+		}
+	}
+}
+
+void LLInventoryAddedObserver::changed(U32 mask)
+{
+	if(!(mask & LLInventoryObserver::ADD))
+	{
+		return;
+	}
+
+	// *HACK: If this was in response to a packet off
+	// the network, figure out which item was updated.
+	LLMessageSystem* msg = gMessageSystem;
+
+	std::string msg_name;
+	if (mMessageName.empty())
+	{
+		msg_name = msg->getMessageName();
+	}
+	else
+	{
+		msg_name = mMessageName;
+	}
+
+	if (msg_name.empty())
+	{
+		return;
+	}
+	
+	// We only want newly created inventory items. JC
+	if ( msg_name != "UpdateCreateInventoryItem")
+	{
+		return;
+	}
+
+	LLPointer<LLViewerInventoryItem> titem = new LLViewerInventoryItem;
+	S32 num_blocks = msg->getNumberOfBlocksFast(_PREHASH_InventoryData);
+	for(S32 i = 0; i < num_blocks; ++i)
+	{
+		titem->unpackMessage(msg, _PREHASH_InventoryData, i);
+		if (!(titem->getUUID().isNull()))
+		{
+			//we don't do anything with null keys
+			mAdded.push_back(titem->getUUID());
+		}
+	}
+	if (!mAdded.empty())
+	{
+		done();
+	}
+}
+
+LLInventoryTransactionObserver::LLInventoryTransactionObserver(
+	const LLTransactionID& transaction_id) :
+	mTransactionID(transaction_id)
+{
+}
+
+void LLInventoryTransactionObserver::changed(U32 mask)
+{
+	if(mask & LLInventoryObserver::ADD)
+	{
+		// This could be it - see if we are processing a bulk update
+		LLMessageSystem* msg = gMessageSystem;
+		if(msg->getMessageName()
+		   && (0 == strcmp(msg->getMessageName(), "BulkUpdateInventory")))
+		{
+			// we have a match for the message - now check the
+			// transaction id.
+			LLUUID id;
+			msg->getUUIDFast(_PREHASH_AgentData, _PREHASH_TransactionID, id);
+			if(id == mTransactionID)
+			{
+				// woo hoo, we found it
+				folder_ref_t folders;
+				item_ref_t items;
+				S32 count;
+				count = msg->getNumberOfBlocksFast(_PREHASH_FolderData);
+				S32 i;
+				for(i = 0; i < count; ++i)
+				{
+					msg->getUUIDFast(_PREHASH_FolderData, _PREHASH_FolderID, id, i);
+					if(id.notNull())
+					{
+						folders.push_back(id);
+					}
+				}
+				count = msg->getNumberOfBlocksFast(_PREHASH_ItemData);
+				for(i = 0; i < count; ++i)
+				{
+					msg->getUUIDFast(_PREHASH_ItemData, _PREHASH_ItemID, id, i);
+					if(id.notNull())
+					{
+						items.push_back(id);
+					}
+				}
+
+				// call the derived class the implements this method.
+				done(folders, items);
+			}
+		}
+	}
+}