diff --git a/source/glest_game/network/network_message.cpp b/source/glest_game/network/network_message.cpp
index 31d304de..d8f00ab3 100644
--- a/source/glest_game/network/network_message.cpp
+++ b/source/glest_game/network/network_message.cpp
@@ -354,19 +354,21 @@ NetworkMessageSynchNetworkGameData::NetworkMessageSynchNetworkGameData(const Gam
     //data.tilesetCRC = getFolderTreeContentsCheckSumRecursively(string(GameConstants::folder_path_tilesets) + "/" + gameSettings->getTileset() + "/*", "xml", NULL);
 	data.tilesetCRC = getFolderTreeContentsCheckSumRecursively(config.getPathListForType(ptTilesets,scenarioDir), string("/") + gameSettings->getTileset() + string("/*"), ".xml", NULL);
 
-	SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s Line: %d]\n",__FILE__,__FUNCTION__,__LINE__);
+	SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s Line: %d] data.tilesetCRC = %d, [%s]\n",__FILE__,__FUNCTION__,__LINE__, data.tilesetCRC,gameSettings->getTileset().c_str());
+
     //tech, load before map because of resources
     //data.techCRC  = getFolderTreeContentsCheckSumRecursively(string(GameConstants::folder_path_techs) + "/" + gameSettings->getTech() + "/*", "xml", NULL);
 	data.techCRC = getFolderTreeContentsCheckSumRecursively(config.getPathListForType(ptTechs,scenarioDir), string("/") + gameSettings->getTech() + string("/*"), ".xml", NULL);
 
-	SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s Line: %d]\n",__FILE__,__FUNCTION__,__LINE__);
+	SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s Line: %d] data.techCRC = %d, [%s]\n",__FILE__,__FUNCTION__,__LINE__, data.techCRC,gameSettings->getTech().c_str());
+
     //map
     Checksum checksum;
     string file = Map::getMapPath(gameSettings->getMap(),scenarioDir);
 	checksum.addFile(file);
 	data.mapCRC = checksum.getSum();
 	//SystemFlags::OutputDebug(SystemFlags::debugNetwork,"In [%s::%s] file = [%s] checksum = %d\n",__FILE__,__FUNCTION__,file.c_str(),data.mapCRC);
-	SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s Line: %d]\n",__FILE__,__FUNCTION__,__LINE__);
+	SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s Line: %d] data.mapCRC = %d, [%s]\n",__FILE__,__FUNCTION__,__LINE__, data.mapCRC,gameSettings->getMap().c_str());
 }
 
 bool NetworkMessageSynchNetworkGameData::receive(Socket* socket)
diff --git a/source/shared_lib/sources/platform/sdl/platform_util.cpp b/source/shared_lib/sources/platform/sdl/platform_util.cpp
index 8f89ef32..20536a81 100644
--- a/source/shared_lib/sources/platform/sdl/platform_util.cpp
+++ b/source/shared_lib/sources/platform/sdl/platform_util.cpp
@@ -275,11 +275,24 @@ int32 getFolderTreeContentsCheckSumRecursively(vector<string> paths, string path
 
 	SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s Line: %d]\n",__FILE__,__FUNCTION__,__LINE__);
 
-	Checksum checksum = (recursiveChecksum == NULL ? Checksum() : *recursiveChecksum);
+	static std::map<string,int32> crcTreeCache;
+
+	string cacheKey = "";
 	int count = paths.size();
 	for(int idx = 0; idx < count; ++idx) {
 		string path = paths[idx] + pathSearchString;
 
+		cacheKey += path + "_" + filterFileExt + "_";
+	}
+	if(crcTreeCache.find(cacheKey) != crcTreeCache.end()) {
+		SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s] scanning folders found CACHED checksum = %d for cacheKey [%s]\n",__FILE__,__FUNCTION__,crcTreeCache[cacheKey],cacheKey.c_str());
+		return crcTreeCache[cacheKey];
+	}
+
+	Checksum checksum = (recursiveChecksum == NULL ? Checksum() : *recursiveChecksum);
+	for(int idx = 0; idx < count; ++idx) {
+		string path = paths[idx] + pathSearchString;
+
 		SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s Line: %d] path = [%s], filterFileExt = [%s]\n",__FILE__,__FUNCTION__,__LINE__,path.c_str(),filterFileExt.c_str());
 
 		getFolderTreeContentsCheckSumRecursively(path, filterFileExt, &checksum);
@@ -291,7 +304,8 @@ int32 getFolderTreeContentsCheckSumRecursively(vector<string> paths, string path
 		*recursiveChecksum = checksum;
 	}
 
-	return checksum.getFinalFileListSum();
+	crcTreeCache[cacheKey] = checksum.getFinalFileListSum();
+	return crcTreeCache[cacheKey];
 }
 
 //finds all filenames like path and gets their checksum of all files combined
@@ -300,6 +314,7 @@ int32 getFolderTreeContentsCheckSumRecursively(const string &path, const string
 	string cacheKey = path + "_" + filterFileExt;
 	static std::map<string,int32> crcTreeCache;
 	if(crcTreeCache.find(cacheKey) != crcTreeCache.end()) {
+		SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s] scanning [%s] found CACHED checksum = %d for cacheKey [%s]\n",__FILE__,__FUNCTION__,path.c_str(),crcTreeCache[cacheKey],cacheKey.c_str());
 		return crcTreeCache[cacheKey];
 	}
     Checksum checksum = (recursiveChecksum == NULL ? Checksum() : *recursiveChecksum);
@@ -388,7 +403,7 @@ int32 getFolderTreeContentsCheckSumRecursively(const string &path, const string
 
 	crcTreeCache[cacheKey] = checksum.getFinalFileListSum();
 
-	SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s] scanning [%s] ending checksum = %d\n",__FILE__,__FUNCTION__,path.c_str(),crcTreeCache[cacheKey]);
+	SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s] scanning [%s] ending checksum = %d for cacheKey [%s]\n",__FILE__,__FUNCTION__,path.c_str(),crcTreeCache[cacheKey],cacheKey.c_str());
 
     return crcTreeCache[cacheKey];
 }
@@ -396,8 +411,21 @@ int32 getFolderTreeContentsCheckSumRecursively(const string &path, const string
 vector<std::pair<string,int32> > getFolderTreeContentsCheckSumListRecursively(vector<string> paths, string pathSearchString, string filterFileExt, vector<std::pair<string,int32> > *recursiveMap) {
 	SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s Line: %d]\n",__FILE__,__FUNCTION__,__LINE__);
 
-	vector<std::pair<string,int32> > checksumFiles = (recursiveMap == NULL ? vector<std::pair<string,int32> >() : *recursiveMap);
+	static std::map<string,vector<std::pair<string,int32> > > crcTreeCache;
+
+	string cacheKey = "";
 	int count = paths.size();
+	for(int idx = 0; idx < count; ++idx) {
+		string path = paths[idx] + pathSearchString;
+
+		cacheKey += path + "_" + filterFileExt + "_";
+	}
+	if(crcTreeCache.find(cacheKey) != crcTreeCache.end()) {
+		SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s] scanning folders found CACHED result for cacheKey [%s]\n",__FILE__,__FUNCTION__,cacheKey.c_str());
+		return crcTreeCache[cacheKey];
+	}
+
+	vector<std::pair<string,int32> > checksumFiles = (recursiveMap == NULL ? vector<std::pair<string,int32> >() : *recursiveMap);
 	for(int idx = 0; idx < count; ++idx) {
 		string path = paths[idx] + pathSearchString;
 		getFolderTreeContentsCheckSumListRecursively(path, filterFileExt, &checksumFiles);
@@ -405,7 +433,8 @@ vector<std::pair<string,int32> > getFolderTreeContentsCheckSumListRecursively(ve
 
 	SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s Line: %d]\n",__FILE__,__FUNCTION__,__LINE__);
 
-	return checksumFiles;
+	crcTreeCache[cacheKey] = checksumFiles;
+	return crcTreeCache[cacheKey];
 }
 
 //finds all filenames like path and gets the checksum of each file
@@ -414,6 +443,7 @@ vector<std::pair<string,int32> > getFolderTreeContentsCheckSumListRecursively(co
 	string cacheKey = path + "_" + filterFileExt;
 	static std::map<string,vector<std::pair<string,int32> > > crcTreeCache;
 	if(crcTreeCache.find(cacheKey) != crcTreeCache.end()) {
+		SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s] scanning [%s] FOUND CACHED result for cacheKey [%s]\n",__FILE__,__FUNCTION__,path.c_str(),cacheKey.c_str());
 		return crcTreeCache[cacheKey];
 	}
 
@@ -496,10 +526,10 @@ vector<std::pair<string,int32> > getFolderTreeContentsCheckSumListRecursively(co
 
 	globfree(&globbuf);
 
-	SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s] scanning [%s]\n",__FILE__,__FUNCTION__,path.c_str());
-
 	crcTreeCache[cacheKey] = checksumFiles;
 
+	SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s] scanning [%s] cacheKey [%s]\n",__FILE__,__FUNCTION__,path.c_str(),cacheKey.c_str());
+
     return crcTreeCache[cacheKey];
 }
 
diff --git a/source/shared_lib/sources/platform/win32/platform_util.cpp b/source/shared_lib/sources/platform/win32/platform_util.cpp
index e2bca548..c0358437 100644
--- a/source/shared_lib/sources/platform/win32/platform_util.cpp
+++ b/source/shared_lib/sources/platform/win32/platform_util.cpp
@@ -337,11 +337,24 @@ int32 getFolderTreeContentsCheckSumRecursively(vector<string> paths, string path
 
 	SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s Line: %d]\n",__FILE__,__FUNCTION__,__LINE__);
 
-	Checksum checksum = (recursiveChecksum == NULL ? Checksum() : *recursiveChecksum);
+	static std::map<string,int32> crcTreeCache;
+
+	string cacheKey = "";
 	int count = paths.size();
 	for(int idx = 0; idx < count; ++idx) {
 		string path = paths[idx] + pathSearchString;
 
+		cacheKey += path + "_" + filterFileExt + "_";
+	}
+	if(crcTreeCache.find(cacheKey) != crcTreeCache.end()) {
+		SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s] scanning folders found CACHED checksum = %d for cacheKey [%s]\n",__FILE__,__FUNCTION__,crcTreeCache[cacheKey],cacheKey.c_str());
+		return crcTreeCache[cacheKey];
+	}
+
+	Checksum checksum = (recursiveChecksum == NULL ? Checksum() : *recursiveChecksum);
+	for(int idx = 0; idx < count; ++idx) {
+		string path = paths[idx] + pathSearchString;
+
 		SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s Line: %d] path = [%s], filterFileExt = [%s]\n",__FILE__,__FUNCTION__,__LINE__,path.c_str(),filterFileExt.c_str());
 
 		getFolderTreeContentsCheckSumRecursively(path, filterFileExt, &checksum);
@@ -353,7 +366,8 @@ int32 getFolderTreeContentsCheckSumRecursively(vector<string> paths, string path
 		*recursiveChecksum = checksum;
 	}
 
-	return checksum.getFinalFileListSum();
+	crcTreeCache[cacheKey] = checksum.getFinalFileListSum();
+	return crcTreeCache[cacheKey];
 }
 
 //finds all filenames like path and gets their checksum of all files combined
@@ -362,6 +376,7 @@ int32 getFolderTreeContentsCheckSumRecursively(const string &path, const string
 	string cacheKey = path + "_" + filterFileExt;
 	static std::map<string,int32> crcTreeCache;
 	if(crcTreeCache.find(cacheKey) != crcTreeCache.end()) {
+		SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s] scanning [%s] found CACHED checksum = %d for cacheKey [%s]\n",__FILE__,__FUNCTION__,path.c_str(),crcTreeCache[cacheKey],cacheKey.c_str());
 		return crcTreeCache[cacheKey];
 	}
     Checksum checksum = (recursiveChecksum == NULL ? Checksum() : *recursiveChecksum);
@@ -450,7 +465,7 @@ int32 getFolderTreeContentsCheckSumRecursively(const string &path, const string
 
 	crcTreeCache[cacheKey] = checksum.getFinalFileListSum();
 
-	SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s] scanning [%s] ending checksum = %d\n",__FILE__,__FUNCTION__,path.c_str(),crcTreeCache[cacheKey]);
+	SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s] scanning [%s] ending checksum = %d for cacheKey [%s]\n",__FILE__,__FUNCTION__,path.c_str(),crcTreeCache[cacheKey],cacheKey.c_str());
 
     return crcTreeCache[cacheKey];
 }
@@ -458,8 +473,21 @@ int32 getFolderTreeContentsCheckSumRecursively(const string &path, const string
 vector<std::pair<string,int32> > getFolderTreeContentsCheckSumListRecursively(vector<string> paths, string pathSearchString, string filterFileExt, vector<std::pair<string,int32> > *recursiveMap) {
 	SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s Line: %d]\n",__FILE__,__FUNCTION__,__LINE__);
 
-	vector<std::pair<string,int32> > checksumFiles = (recursiveMap == NULL ? vector<std::pair<string,int32> >() : *recursiveMap);
+	static std::map<string,vector<std::pair<string,int32> > > crcTreeCache;
+
+	string cacheKey = "";
 	int count = paths.size();
+	for(int idx = 0; idx < count; ++idx) {
+		string path = paths[idx] + pathSearchString;
+
+		cacheKey += path + "_" + filterFileExt + "_";
+	}
+	if(crcTreeCache.find(cacheKey) != crcTreeCache.end()) {
+		SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s] scanning folders found CACHED result for cacheKey [%s]\n",__FILE__,__FUNCTION__,cacheKey.c_str());
+		return crcTreeCache[cacheKey];
+	}
+
+	vector<std::pair<string,int32> > checksumFiles = (recursiveMap == NULL ? vector<std::pair<string,int32> >() : *recursiveMap);
 	for(int idx = 0; idx < count; ++idx) {
 		string path = paths[idx] + pathSearchString;
 		getFolderTreeContentsCheckSumListRecursively(path, filterFileExt, &checksumFiles);
@@ -467,7 +495,8 @@ vector<std::pair<string,int32> > getFolderTreeContentsCheckSumListRecursively(ve
 
 	SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s Line: %d]\n",__FILE__,__FUNCTION__,__LINE__);
 
-	return checksumFiles;
+	crcTreeCache[cacheKey] = checksumFiles;
+	return crcTreeCache[cacheKey];
 }
 
 //finds all filenames like path and gets the checksum of each file
@@ -476,6 +505,7 @@ vector<std::pair<string,int32> > getFolderTreeContentsCheckSumListRecursively(co
 	string cacheKey = path + "_" + filterFileExt;
 	static std::map<string,vector<std::pair<string,int32> > > crcTreeCache;
 	if(crcTreeCache.find(cacheKey) != crcTreeCache.end()) {
+		SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s] scanning [%s] FOUND CACHED result for cacheKey [%s]\n",__FILE__,__FUNCTION__,path.c_str(),cacheKey.c_str());
 		return crcTreeCache[cacheKey];
 	}
 
@@ -558,10 +588,10 @@ vector<std::pair<string,int32> > getFolderTreeContentsCheckSumListRecursively(co
 
 	globfree(&globbuf);
 
-	SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s] scanning [%s]\n",__FILE__,__FUNCTION__,path.c_str());
-
 	crcTreeCache[cacheKey] = checksumFiles;
 
+	SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s] scanning [%s] cacheKey [%s]\n",__FILE__,__FUNCTION__,path.c_str(),cacheKey.c_str());
+
     return crcTreeCache[cacheKey];
 }
 
diff --git a/source/shared_lib/sources/util/util.cpp b/source/shared_lib/sources/util/util.cpp
index 698c1016..9d621729 100644
--- a/source/shared_lib/sources/util/util.cpp
+++ b/source/shared_lib/sources/util/util.cpp
@@ -141,7 +141,6 @@ void SystemFlags::OutputDebug(DebugType type, const char *fmt, ...) {
         	}
 
         	string debugLog = currentDebugLog.debugLogFileName;
-            printf("Opening logfile [%s] type = %d, currentDebugLog.fileStreamOwner = %d\n",debugLog.c_str(),type, currentDebugLog.fileStreamOwner);
 
 			if(SystemFlags::lockFile == -1) {
 				const string lock_file_name = "debug.lck";
@@ -184,6 +183,8 @@ void SystemFlags::OutputDebug(DebugType type, const char *fmt, ...) {
 				currentDebugLog.fileStreamOwner = true;
             }
 
+            printf("Opening logfile [%s] type = %d, currentDebugLog.fileStreamOwner = %d\n",debugLog.c_str(),type, currentDebugLog.fileStreamOwner);
+
             (*currentDebugLog.fileStream) << "Starting Mega-Glest logging for type: " << type << "\n";
             (*currentDebugLog.fileStream).flush();
         }