diff --git a/source/glest_game/menu/menu_state_connected_game.cpp b/source/glest_game/menu/menu_state_connected_game.cpp
index c78dfe009..5c4202d93 100644
--- a/source/glest_game/menu/menu_state_connected_game.cpp
+++ b/source/glest_game/menu/menu_state_connected_game.cpp
@@ -1819,6 +1819,9 @@ void MenuStateConnectedGame::FTPClient_CallbackEvent(string itemName, FTP_Client
         fileFTPProgressList.erase(itemName);
         safeMutexFTPProgress.ReleaseLock();
 
+        // Clear the CRC file Cache
+        Checksum::clearFileCache();
+
         NetworkManager &networkManager= NetworkManager::getInstance();
         ClientInterface* clientInterface= networkManager.getClientInterface();
         const GameSettings *gameSettings = clientInterface->getGameSettings();
@@ -1889,6 +1892,9 @@ void MenuStateConnectedGame::FTPClient_CallbackEvent(string itemName, FTP_Client
             }
             // END
 
+            // Clear the CRC file Cache
+            Checksum::clearFileCache();
+
             // Reload tilesets for the UI
             findDirs(Config::getInstance().getPathListForType(ptTilesets), tileSets);
         }
diff --git a/source/shared_lib/include/util/checksum.h b/source/shared_lib/include/util/checksum.h
index 60508895c..6257b282d 100644
--- a/source/shared_lib/include/util/checksum.h
+++ b/source/shared_lib/include/util/checksum.h
@@ -37,7 +37,7 @@ private:
 	static std::map<string,int32> fileListCache;
 
 	void addSum(int32 value);
-	void addFileToSum(const string &path);
+	bool addFileToSum(const string &path);
 
 public:
 	Checksum();
@@ -49,6 +49,9 @@ public:
 	void addByte(int8 value);
 	void addString(const string &value);
 	void addFile(const string &path);
+
+	static void removeFileFromCache(const string file);
+	static void clearFileCache();
 };
 
 }}//end namespace
diff --git a/source/shared_lib/sources/util/checksum.cpp b/source/shared_lib/sources/util/checksum.cpp
index 22e802eec..75f601a54 100644
--- a/source/shared_lib/sources/util/checksum.cpp
+++ b/source/shared_lib/sources/util/checksum.cpp
@@ -66,7 +66,7 @@ void Checksum::addFile(const string &path){
 	}
 }
 
-void Checksum::addFileToSum(const string &path){
+bool Checksum::addFileToSum(const string &path){
 
 // OLD SLOW FILE I/O
 /*
@@ -115,10 +115,10 @@ void Checksum::addFileToSum(const string &path){
    free(data);
 */
 
-
+    bool fileExists = false;
 	FILE* file= fopen(path.c_str(), "rb");
-	if(file!=NULL) {
-
+	if(file != NULL) {
+        fileExists = true;
 		addString(lastFile(path));
 
 		bool isXMLFile = (EndsWith(path, ".xml") == true);
@@ -162,12 +162,11 @@ void Checksum::addFileToSum(const string &path){
 			}
 		}
 	}
-	else
-	{
+	else {
 		throw runtime_error("Can not open file: " + path);
 	}
 	fclose(file);
-
+    return fileExists;
 }
 
 int32 Checksum::getSum() {
@@ -200,4 +199,14 @@ int32 Checksum::getFileCount() {
 	return (int32)fileList.size();
 }
 
+void Checksum::removeFileFromCache(const string file) {
+    if(Checksum::fileListCache.find(file) != Checksum::fileListCache.end()) {
+        Checksum::fileListCache.erase(file);
+    }
+}
+
+void Checksum::clearFileCache() {
+    Checksum::fileListCache.clear();
+}
+
 }}//end namespace