diff --git a/ipaacalib/cpp/build.xml b/ipaacalib/cpp/build.xml
index 75ed860ffc377c3c0c073305221ea7b58bf32d79..f205ed3674f49dd18e475bf98c64235bd6ff622a 100644
--- a/ipaacalib/cpp/build.xml
+++ b/ipaacalib/cpp/build.xml
@@ -3,7 +3,7 @@
    <import file="../../../hmibuild/build.xml" />
    <target name="check-proto-files">
       <echo message="Checking whether compiled protobuf files are already present..." />
-      <available file="build/ipaaca.pb.h" property="pb.present"/>
+      <available file="build/ipaaca/ipaaca.pb.h" property="pb.present"/>
    </target>
    <target name="-proto-yes" depends="check-proto-files" if="pb.present">
       <echo message="Built protobuf files found, skipping compilation" />
diff --git a/ipaacalib/cpp/include/ipaaca/ipaaca.h b/ipaacalib/cpp/include/ipaaca/ipaaca.h
index 541ec59b5d89b765c5bb75d52da025b256b0fef6..89e8a32224c663c57d6a2df8d19e9934ff423939 100644
--- a/ipaacalib/cpp/include/ipaaca/ipaaca.h
+++ b/ipaacalib/cpp/include/ipaaca/ipaaca.h
@@ -241,6 +241,14 @@ class CallbackIUCommission: public rsb::patterns::Server::Callback<protobuf::IUC
 	public:
 		boost::shared_ptr<int> call(const std::string& methodName, boost::shared_ptr<protobuf::IUCommission> update);
 };
+class CallbackIURetraction: public rsb::patterns::Server::Callback<protobuf::IURetraction, int> {
+	protected:
+		Buffer* _buffer;
+	public:
+		CallbackIURetraction(Buffer* buffer);
+	public:
+		boost::shared_ptr<int> call(const std::string& methodName, boost::shared_ptr<protobuf::IURetraction> update);
+};
 
 class OutputBuffer: public Buffer { //, public boost::enable_shared_from_this<OutputBuffer>  {//{{{
 	friend class IU;
@@ -451,6 +459,7 @@ class IUInterface {//{{{
 		std::string _payload_type; // default is "MAP"
 		std::string _owner_name;
 		bool _committed;
+		bool _retracted;
 		IUAccessMode _access_mode;
 		bool _read_only;
 		//boost::shared_ptr<Buffer> _buffer;
@@ -556,6 +565,7 @@ class RemotePushIU: public IUInterface {//{{{
 		void _apply_update(IUPayloadUpdate::ptr update);
 		void _apply_link_update(IULinkUpdate::ptr update);
 		void _apply_commission();
+		void _apply_retraction();
 	typedef boost::shared_ptr<RemotePushIU> ptr;
 };//}}}
 
diff --git a/ipaacalib/cpp/src/ipaaca.cc b/ipaacalib/cpp/src/ipaaca.cc
index 855acd3722d0e8eeb57d081666de1d87b8c98711..f73a81adc4269b5d8005405a13df7284646a9c89 100644
--- a/ipaacalib/cpp/src/ipaaca.cc
+++ b/ipaacalib/cpp/src/ipaaca.cc
@@ -22,19 +22,22 @@ void Initializer::initialize_ipaaca_rsb_if_needed()
 	Factory::getInstance().setDefaultParticipantConfig(config);
 	
 	boost::shared_ptr<IUConverter> iu_converter(new IUConverter());
-	stringConverterRepository()->registerConverter(iu_converter);
+	converterRepository<std::string>()->registerConverter(iu_converter);
 	
 	boost::shared_ptr<IUPayloadUpdateConverter> payload_update_converter(new IUPayloadUpdateConverter());
-	stringConverterRepository()->registerConverter(payload_update_converter);
+	converterRepository<std::string>()->registerConverter(payload_update_converter);
 	
 	boost::shared_ptr<IULinkUpdateConverter> link_update_converter(new IULinkUpdateConverter());
-	stringConverterRepository()->registerConverter(link_update_converter);
+	converterRepository<std::string>()->registerConverter(link_update_converter);
 	
 	boost::shared_ptr<ProtocolBufferConverter<protobuf::IUCommission> > iu_commission_converter(new ProtocolBufferConverter<protobuf::IUCommission> ());
-	stringConverterRepository()->registerConverter(iu_commission_converter);
- 
+	converterRepository<std::string>()->registerConverter(iu_commission_converter);
+	
+	boost::shared_ptr<ProtocolBufferConverter<protobuf::IURetraction> > iu_retraction_converter(new ProtocolBufferConverter<protobuf::IURetraction> ());
+	converterRepository<std::string>()->registerConverter(iu_retraction_converter);
+	
 	boost::shared_ptr<IntConverter> int_converter(new IntConverter());
-	stringConverterRepository()->registerConverter(int_converter);
+	converterRepository<std::string>()->registerConverter(int_converter);
 	
 	_initialized = true;
 	//IPAACA_TODO("initialize all converters")
@@ -666,6 +669,21 @@ void InputBuffer::_handle_iu_events(EventPtr event)
 			call_iu_event_handlers(it->second, false, IU_COMMITTED, it->second->category() );
 			//
 			//
+		} else if (type == "ipaaca::protobuf::IURetraction") {
+			boost::shared_ptr<protobuf::IURetraction> update = boost::static_pointer_cast<protobuf::IURetraction>(event->getData());
+			it = _iu_store.find(update->uid());
+			if (it == _iu_store.end()) {
+				IPAACA_INFO("Ignoring RETRACTED message for an IU that we did not fully receive before")
+				return;
+			}
+			//
+			it->second->_revision = update->revision();
+			it->second->_apply_retraction();
+			// remove from InputBuffer     FIXME: this is a crossover between retracted and deleted behavior
+			_iu_store.erase(it->first);
+			// and call the handler. IU reference is still valid for this call, although removed from buffer.
+			call_iu_event_handlers(it->second, false, IU_COMMITTED, it->second->category() );
+			//
 		} else {
 			std::cout << "(Unhandled Event type " << type << " !)" << std::endl;
 			return;
@@ -681,7 +699,7 @@ void InputBuffer::_handle_iu_events(EventPtr event)
 // IUInterface//{{{
 
 IUInterface::IUInterface()
-: _buffer(NULL), _committed(false)
+: _buffer(NULL), _committed(false), _retracted(false)
 {
 }
 
@@ -945,6 +963,10 @@ void RemotePushIU::_apply_commission()
 {
 	_committed = true;
 }
+void RemotePushIU::_apply_retraction()
+{
+	_retracted = true;
+}
 void Payload::_remotely_enforced_wipe()
 {
 	_store.clear();
diff --git a/ipaacalib/java/manifest.mf b/ipaacalib/java/manifest.mf
index bd2397be05ff81088ca51c679d46422d18327d47..486cc6ac6bb80b46a7956566c10f34e81b83cfd1 100644
--- a/ipaacalib/java/manifest.mf
+++ b/ipaacalib/java/manifest.mf
@@ -6,5 +6,5 @@ Specification-Title:    IpaacaJava
 Specification-Version:  0.1
 Specification-Vendor:   ipaaca
 Implementation-Title:   IpaacaJava
-Implementation-Version: August 02 2012  01:27 PM
+Implementation-Version: August 08 2012  11:03 AM
 Implementation-Vendor:  ipaaca
\ No newline at end of file
diff --git a/ipaacalib/python/ivy.xml b/ipaacalib/python/ivy.xml
index 9eb98898c4d5a552bd530ee05c39b90c9d942350..954ee17eb9d693a9506c885b298ca63a35d0fa3b 100644
--- a/ipaacalib/python/ivy.xml
+++ b/ipaacalib/python/ivy.xml
@@ -1,11 +1,11 @@
 <ivy-module version="2.0">
    <info organisation="ipaaca" module="IpaacaPython" />
    <publications>
-   	<artifact type="zip" ext="zip"/>
+   <artifact type="zip" ext="zip"/>
    </publications>
    <dependencies>
-      <dependency org="google" name="protobuf" rev="latest.release"/>
-      <dependency org="rsb" name="rsb" rev="latest.release"/>
+      <!-- dependency org="google" name="protobuf" rev="latest.release"/ -->
+      <!-- dependency org="rsb" name="rsb" rev="latest.release"/ -->
    </dependencies>
-   
+
 </ivy-module>
diff --git a/resolve.sh b/resolve.sh
index 4802315eda0aaa7bd53d8e91bc25cd8df96b488d..9fc09833d849b26e0fd3c38d06df2c33ae8ad101 100755
--- a/resolve.sh
+++ b/resolve.sh
@@ -6,10 +6,12 @@ mkdir -p deps/bin
 mkdir -p deps/lib
 mkdir -p deps/include
 mkdir -p deps/scripts
+mkdir -p deps/python
 for P in $PACKAGES; do
 	cp -a ../$P/dist/bin/* deps/bin/
 	cp -a ../$P/dist/lib/* deps/lib/
 	cp -a ../$P/dist/include/* deps/include/
 	cp -a ../$P/dist/scripts/* deps/scripts/
+	cp -a ../$P/dist/python/* deps/python/
 done