diff --git a/libretroshare/src/rsserver/rsinit.cc b/libretroshare/src/rsserver/rsinit.cc
index 25391fcbe..73a70d0c5 100644
--- a/libretroshare/src/rsserver/rsinit.cc
+++ b/libretroshare/src/rsserver/rsinit.cc
@@ -1193,7 +1193,7 @@ int RsServer::StartupRetroShare()
 		std::cerr << "(EE) Cannot create extensions directory " << extensions_dir
                   << ". This is not mandatory, but you probably have a permission problem." << std::endl;
 
-#ifdef DEBUG_PLUGIN_SYSTEM
+#ifndef DEBUG_PLUGIN_SYSTEM
 	plugins_directories.push_back(".") ;	// this list should be saved/set to some correct value.
 	// possible entries include: /usr/lib/retroshare, ~/.retroshare/extensions/, etc.
 #endif
diff --git a/retroshare-gui/src/gui/gxs/GxsMessageFramePostWidget.cpp b/retroshare-gui/src/gui/gxs/GxsMessageFramePostWidget.cpp
index 06225843b..1eb52356a 100644
--- a/retroshare-gui/src/gui/gxs/GxsMessageFramePostWidget.cpp
+++ b/retroshare-gui/src/gui/gxs/GxsMessageFramePostWidget.cpp
@@ -185,7 +185,7 @@ void GxsMessageFramePostWidget::loadGroupData()
 
 	RsThread::async([this]()
 	{
-		RsGxsGenericGroupData *data;
+		RsGxsGenericGroupData *data = nullptr;
 		getGroupData(data);
 
         if(!data)
diff --git a/retroshare-gui/src/gui/gxschannels/GxsChannelPostsWidget.cpp b/retroshare-gui/src/gui/gxschannels/GxsChannelPostsWidget.cpp
index 36c0d8188..11ba70ccb 100644
--- a/retroshare-gui/src/gui/gxschannels/GxsChannelPostsWidget.cpp
+++ b/retroshare-gui/src/gui/gxschannels/GxsChannelPostsWidget.cpp
@@ -515,7 +515,7 @@ void GxsChannelPostsWidget::createPostItem(const RsGxsChannelPost& post, bool re
 
         if(item)
 		{
-            std::set<RsGxsMessageId> older_versions(item->olderVersions());
+            std::set<RsGxsMessageId> older_versions(item->olderVersions()); // we make a copy because the item will be deleted
 			ui->feedWidget->removeFeedItem(item) ;
 
             older_versions.insert(meta.mMsgId);
@@ -792,9 +792,16 @@ void GxsChannelPostsWidget::toggleAutoDownload()
 
 bool GxsChannelPostsWidget::insertGroupData(const RsGxsGenericGroupData *data)
 {
-	insertChannelDetails(*dynamic_cast<const RsGxsChannelGroup*>(data));
-	return true;
+    const RsGxsChannelGroup *d = dynamic_cast<const RsGxsChannelGroup*>(data);
 
+    if(!d)
+    {
+        RsErr() << __PRETTY_FUNCTION__ << " Cannot dynamic cast input data (" << (void*)data << " to RsGxsGenericGroupData. Something bad happenned." << std::endl;
+        return false;
+    }
+
+	insertChannelDetails(*d);
+	return true;
 }
 
 void GxsChannelPostsWidget::getMsgData(const std::set<RsGxsMessageId>& msgIds,std::vector<RsGxsGenericMsgData*>& psts)
@@ -825,6 +832,11 @@ void GxsChannelPostsWidget::getAllMsgData(std::vector<RsGxsGenericMsgData*>& pst
 
 bool GxsChannelPostsWidget::getGroupData(RsGxsGenericGroupData *& data)
 {
+    if(groupId().isNull())
+    {
+        RsErr() << __PRETTY_FUNCTION__ << " Trying to get data about null group!!" << std::endl;
+        return false;
+    }
     std::vector<RsGxsChannelGroup> groups;
 
     if(rsGxsChannels->getChannelsInfo(std::list<RsGxsGroupId>({groupId()}),groups) && groups.size()==1)
@@ -851,7 +863,7 @@ void GxsChannelPostsWidget::insertAllPosts(const std::vector<RsGxsGenericMsgData
 {
     std::vector<RsGxsChannelPost> cposts;
 
-    for(auto post: posts)	// This  is not so nice but we have somehow to convert to RsGxsChannelPost at some timer, and the cposts list is being modified in the insert method.
+    for(auto post: posts)	// This  is not so nice but we have somehow to convert to RsGxsChannelPost at some time, and the cposts list is being modified in the insert method.
 		cposts.push_back(*static_cast<RsGxsChannelPost*>(post));
 
 	insertChannelPosts(cposts, thread, false);
diff --git a/retroshare-gui/src/gui/gxsforums/GxsForumThreadWidget.cpp b/retroshare-gui/src/gui/gxsforums/GxsForumThreadWidget.cpp
index 37b479e6a..c3d1ca70b 100644
--- a/retroshare-gui/src/gui/gxsforums/GxsForumThreadWidget.cpp
+++ b/retroshare-gui/src/gui/gxsforums/GxsForumThreadWidget.cpp
@@ -817,7 +817,10 @@ void GxsForumThreadWidget::changedThread(QModelIndex index)
 	bool setToReadOnActive = Settings->getForumMsgSetToReadOnActivate();
 
     if(setToReadOnActive)
+    {
+		saveExpandedItems(mSavedExpandedMessages);
 		mThreadModel->setMsgReadStatus(src_index, true,false);
+    }
 }
 
 void GxsForumThreadWidget::clickedThread(QModelIndex index)
@@ -837,6 +840,7 @@ void GxsForumThreadWidget::clickedThread(QModelIndex index)
 
 	if (index.column() == RsGxsForumModel::COLUMN_THREAD_READ)
     {
+		saveExpandedItems(mSavedExpandedMessages);
         ForumModelPostEntry fmpe;
 
 		QModelIndex src_index = mThreadProxyModel->mapToSource(index);
@@ -845,6 +849,7 @@ void GxsForumThreadWidget::clickedThread(QModelIndex index)
 #ifdef DEBUG_FORUMS
 		std::cerr << "Setting message read status to false" << std::endl;
 #endif
+
 		mThreadModel->setMsgReadStatus(src_index, IS_MSG_UNREAD(fmpe.mMsgStatus),false);
 	}
 #ifdef DEBUG_FORUMS
@@ -1266,6 +1271,7 @@ void GxsForumThreadWidget::markMsgAsReadUnread (bool read, bool children, bool f
 	if (groupId().isNull() || !IS_GROUP_SUBSCRIBED(mForumGroup.mMeta.mSubscribeFlags)) {
 		return;
 	}
+	saveExpandedItems(mSavedExpandedMessages);
 
     if(forum)
 		mThreadModel->setMsgReadStatus(mThreadModel->root(),read,children);