diff --git a/client/FileManager.cpp b/client/FileManager.cpp
index 9a1df55..71659e3 100644
--- a/client/FileManager.cpp
+++ b/client/FileManager.cpp
@@ -514,7 +514,6 @@ int CFileManager::SendToken(BYTE bToken)
 
 bool CFileManager::UploadToRemote(LPBYTE lpBuffer)
 {
-
 	if (lpBuffer[lstrlen((char *)lpBuffer) - 1] == '\\')
 	{
 		FixedUploadList((char *)lpBuffer);
diff --git a/client/IOCPClient.cpp b/client/IOCPClient.cpp
index 564cb6c..776fd2d 100644
--- a/client/IOCPClient.cpp
+++ b/client/IOCPClient.cpp
@@ -279,7 +279,9 @@ VOID IOCPClient::OnServerReceiving(char* szBuffer, ULONG ulLength)
 			else
 				break;
 		}
-	}catch(...) { }
+	}catch(...) { 
+		printf("[ERROR] OnServerReceiving catch an error \n");
+	}
 }
 
 
diff --git a/client/Manager.cpp b/client/Manager.cpp
index b97fd81..e26541e 100644
--- a/client/Manager.cpp
+++ b/client/Manager.cpp
@@ -35,7 +35,9 @@ int CManager::Send(LPBYTE lpData, UINT nSize)
 	try
 	{
 		nRet = m_ClientObject->OnServerSending((char*)lpData, nSize);
-	}catch(...){};
+	}catch(...){
+		printf("[ERROR] CManager::Send catch an error \n");
+	};
 	return nRet;
 }
 
diff --git a/client/zlib.lib b/client/zlib.lib
index 04cb894..4ab49f4 100644
Binary files a/client/zlib.lib and b/client/zlib.lib differ
diff --git a/server/2015Remote/2015RemoteDlg.cpp b/server/2015Remote/2015RemoteDlg.cpp
index ae13ccd..a39f5d5 100644
--- a/server/2015Remote/2015RemoteDlg.cpp
+++ b/server/2015Remote/2015RemoteDlg.cpp
@@ -998,7 +998,9 @@ LRESULT CMy2015RemoteDlg::OnUserToOnlineList(WPARAM wParam, LPARAM lParam)
 
 		AddList(strIP,strAddr,strPCName,strOS,strCPU,strVideo,strPing,ContextObject);
 		return S_OK;
-	}catch(...){}
+	}catch(...){
+		OutputDebugStringA("[ERROR] OnUserToOnlineList catch an error \n");
+	}
 	return -1;
 }
 
diff --git a/server/2015Remote/FileManagerDlg.cpp b/server/2015Remote/FileManagerDlg.cpp
index 3bac396..fcbb524 100644
--- a/server/2015Remote/FileManagerDlg.cpp
+++ b/server/2015Remote/FileManagerDlg.cpp
@@ -921,11 +921,29 @@ void CFileManagerDlg::OnReceiveComplete()
 	switch (m_pContext->m_DeCompressionBuffer.GetBuffer(0)[0])
 	{
 	case TOKEN_FILE_LIST: // 文件列表
-		FixedRemoteFileList
+		try
+		{
+			FixedRemoteFileList
 			(
-			m_pContext->m_DeCompressionBuffer.GetBuffer(0),
-			m_pContext->m_DeCompressionBuffer.GetBufferLen() - 1
+				m_pContext->m_DeCompressionBuffer.GetBuffer(0),
+				m_pContext->m_DeCompressionBuffer.GetBufferLen() - 1
 			);
+		}
+		catch (CMemoryException* e)
+		{
+			OutputDebugStringA("[ERROR] CMemoryException\n");
+		}
+		catch (CFileException* e)
+		{
+			OutputDebugStringA("[ERROR] CFileException\n");
+		}
+		catch (CException* e)
+		{
+			OutputDebugStringA("[ERROR] CException\n");
+		}
+		catch (...) {
+			OutputDebugStringA("[ERROR] Other exception\n");
+		}
 		break;
 	case TOKEN_FILE_SIZE: // 传输文件时的第一个数据包，文件大小，及文件名
 		CreateLocalRecvFile();
@@ -2092,7 +2110,6 @@ void CFileManagerDlg::SendFileData()
 	ReadFile(hFile, lpBuffer + nHeadLength, nNumberOfBytesToRead, &nNumberOfBytesRead, NULL);
 	CloseHandle(hFile);
 
-
 	if (nNumberOfBytesRead > 0)
 	{
 		int	nPacketSize = nNumberOfBytesRead + nHeadLength;
diff --git a/server/2015Remote/IOCPServer.cpp b/server/2015Remote/IOCPServer.cpp
index 46f081d..2bf1841 100644
--- a/server/2015Remote/IOCPServer.cpp
+++ b/server/2015Remote/IOCPServer.cpp
@@ -510,6 +510,7 @@ BOOL IOCPServer::OnClientReceiving(PCONTEXT_OBJECT  ContextObject, DWORD dwTrans
 		PostRecv(ContextObject); //投递新的接收数据的请求
 	}catch(...)
 	{
+		OutputDebugStringA("[ERROR] OnClientReceiving catch an error \n");
 		ContextObject->InCompressedBuffer.ClearBuffer();
 		ContextObject->InDeCompressedBuffer.ClearBuffer();
 
@@ -572,7 +573,9 @@ VOID IOCPServer::OnClientPreSending(CONTEXT_OBJECT* ContextObject, PBYTE szBuffe
 			RemoveStaleContext(ContextObject);
 			SAFE_DELETE(OverlappedPlus);
 		}
-	}catch(...){}
+	}catch(...){
+		OutputDebugStringA("[ERROR] OnClientPreSending catch an error \n");
+	}
 }
 
 BOOL IOCPServer::OnClientPostSending(CONTEXT_OBJECT* ContextObject,ULONG ulCompletedLength)   
@@ -603,7 +606,9 @@ BOOL IOCPServer::OnClientPostSending(CONTEXT_OBJECT* ContextObject,ULONG ulCompl
 				SAFE_DELETE(OverlappedPlus);
 			}
 		}
-	}catch(...){}
+	}catch(...){
+		OutputDebugStringA("[ERROR] OnClientPostSending catch an error \n");
+	}
 
 	return FALSE;			
 }
diff --git a/server/2015Remote/zlib.lib b/server/2015Remote/zlib.lib
index 2da77dd..4ab49f4 100644
Binary files a/server/2015Remote/zlib.lib and b/server/2015Remote/zlib.lib differ