diff --git a/sane/scanned_img.cpp b/sane/scanned_img.cpp
index a81b997..69e093b 100644
--- a/sane/scanned_img.cpp
+++ b/sane/scanned_img.cpp
@@ -385,7 +385,7 @@ scanned_img::scanned_img(SANE_Handle dev, SANE_Parameters head, void* data, unsi
 						, twain_xfer xfer, SANE_FinalImgFormat* fmt) : head_(head), dpi_(dpi), header_size_(0)
 						, file_(tmp_file ? tmp_file : L""), dev_(dev), status_(IMG_STATUS_OK)
 {
-	const bool prepare_data = true;
+	const bool prepare_data = false;	// Compatible with apps that have different actual image retrieval modes from the previously set modes, the data is re-organized at fetch - prepare_data_for_transfer
 
 	if (fmt)
 		fmt_ = *fmt;
diff --git a/twain/twain/huagaods.cpp b/twain/twain/huagaods.cpp
index 4b500fd..be515de 100644
--- a/twain/twain/huagaods.cpp
+++ b/twain/twain/huagaods.cpp
@@ -972,7 +972,7 @@ Twpp::Result huagao_ds::deviceEventGet(const Twpp::Identity& origin, Twpp::Devic
 Result huagao_ds::identityOpenDs(const Identity& id)
 {
 	//singleton_ = CreateMutexA(NULL, FALSE, "LookitApp");
-	//if (GetLastError() == ERROR_ALREADY_EXISTS) { //婵″倹鐏夊鑼病鐎涙ê婀崥灞芥倳閻ㄥ嚜utex娴兼艾绶遍崚鎷岀箹娑擃亪鏁婄拠?
+	//if (GetLastError() == ERROR_ALREADY_EXISTS) { //婵″倹鐏夊鑼病鐎涙ê婀崥灞芥倳閻ㄥ嚜utex娴兼艾绶遍崚鎷岀箹娑擃亪鏁婄�?
 	//	CloseHandle(singleton_);
 	//	singleton_ = NULL;
 	//	showmsg("閹绘劗銇?, 202);
@@ -983,8 +983,9 @@ Result huagao_ds::identityOpenDs(const Identity& id)
 		load_sane_util::initialize(me_);
 	if (!load_sane_util::is_ok())
 	{
-		CloseHandle(singleton_);
-		singleton_ = NULL;
+		//CloseHandle(singleton_);
+		//singleton_ = NULL;
+		load_sane_util::to_log(1, L"huagao_ds::identityOpenDs: %s\r\n", "load_sane_util::initialize failed");
 		return bummer();
 	}
 
@@ -996,9 +997,10 @@ Result huagao_ds::identityOpenDs(const Identity& id)
 
 	if (result.returnCode() != ReturnCode::Success)
 	{
-		CloseHandle(singleton_);
-		singleton_ = NULL;
+		//CloseHandle(singleton_);
+		//singleton_ = NULL;
 		load_sane_util::uninitialize();
+		load_sane_util::to_log(1, L"huagao_ds::identityOpenDs: selectIdentity failed: %d\r\n", (int)result.status());
 		return result;
 	}
 
@@ -1043,7 +1045,7 @@ Result huagao_ds::identityOpenDs(const Identity& id)
 		name = wcsrchr(pe, L'\\');
 		if (name++ == NULL)
 			name = pe;
-		if (wcsicmp(name, L"\u597D\u5206\u6570\u9605\u5377\u626B\u63CF\u7AEF.exe") == 0)	// 爱云校PE：好分数阅卷扫描端.exe
+		if (wcsicmp(name, L"\u597D\u5206\u6570\u9605\u5377\u626B\u63CF\u7AEF.exe") == 0)	// 爱云校PE：好分数阅卷扫描�?exe
 			double_check_mode_ = DOUBLE_CHECK_ULTRASONIC;
 		else
 			double_check_mode_ = DOUBLE_CHECK_TWAIN;
@@ -1104,7 +1106,7 @@ Result huagao_ds::pendingXfersGet(const Identity&, PendingXfers& data)
 
 	// 显示设置界面时，不能阻塞在EndXfer，否则最后一张图片传输后显示不出来，故在此做阻塞调用
 	 int cnt = get_scanned_image_count(-1);
-	// FIX-2023-05-29: 是否保持设置界面显示，由APP决定，此处不再由是否显示UI来决定，保持一个扫描流程正常结束
+	// FIX-2023-05-29: 是否保持设置界面显示，由APP决定，此处不再由是否显示UI来决定，保持一个扫描流程正常结�?
 	//int cnt = show_setting_ ? 1 : get_scanned_image_count(-1);
 	data.setCount(cnt);
 
@@ -1286,9 +1288,9 @@ Result huagao_ds::imageInfoGet(const Identity&, ImageInfo& data)
 		//if (!scanner_->wait_image())
 		//{
 		////	notifyCloseOk();
-		//	return success();		// 婵傝棄鍨庨弫浼存付鐟曚浇绻戦崶鐐村灇閸?
+		//	return success();		// 婵傝棄鍨庨弫浼存付鐟曚浇绻戦崶鐐村灇�?
 		//}
-		if (get_scanned_image_count(-1) > 0)	// 閺勫墽銇氱拋鍓х枂閻ｅ矂娼伴弮璁圭礉娑撳秷鍏橀梼璇差敚閸︹€dXfer閿涘苯鎯侀崚娆愭付閸氬簼绔村鐘叉禈閻楀洣绱舵潏鎾虫倵閺勫墽銇氭稉宥呭毉閺夈儻绱濋弫鍛躬濮濄倕浠涢梼璇差敚鐠嬪啰鏁?
+		if (get_scanned_image_count(-1) > 0)	// 閺勫墽銇氱拋鍓х枂閻ｅ矂娼伴弮璁圭礉娑撳秷鍏橀梼璇差敚閸︹€dXfer閿涘苯鎯侀崚娆愭付閸氬簼绔村鐘叉禈閻楀洣绱舵潏鎾虫倵閺勫墽銇氭稉宥呭毉閺夈儻绱濋弫鍛躬濮濄倕浠涢梼璇差敚鐠嬪啰�?
 		{
 			ok = scanner_->get_first_image_header(&head, NULL, &res);
 			if (ok)
@@ -1905,7 +1907,7 @@ void huagao_ds::init_support_caps(void)
 				return success();
 			}
 		//	data.type
-			if (!data.operator bool()) //閸忛攱婀佹搴ㄦ珦閹?(閸滃本鐨?   Twain sample app ,data.m_cont is null,but DotNet閿涘牆鎷板鏃撶礆 data.m_cont not is null .
+			if (!data.operator bool()) //閸忛攱婀佹搴ㄦ珦閹?(閸滃本鐨?   Twain sample app ,data.m_cont is null,but DotNet閿涘牆鎷板鏃撶�?data.m_cont not is null .
 			{
 				data = Capability::createEnumeration<CapType::Indicators>({ FALSE,TRUE }, m_bIndicator ? 1 : 0, 1);
 			}
@@ -2742,7 +2744,7 @@ void huagao_ds::init_support_caps(void)
 		float	sf = trans_range((float)step, (float)l, (float)u, range_l, range_h, true),
 				nf = trans_range((float)now, (float)l, (float)u, range_l, range_h),
 				initf = trans_range((float)init, (float)l, (float)u, range_l, range_h);
-		sf = 333.30f;	// 全通……部分第三方需要固定该值 :( - 2023-10-25
+		sf = 333.30f;	// 全通……部分第三方需要固定该�?:( - 2023-10-25
 		switch (msg) {
 		case Msg::Get:
 			//sf = 333.333f;
@@ -2791,7 +2793,7 @@ void huagao_ds::init_support_caps(void)
 		float	sf = trans_range((float)step, (float)l, (float)u, range_l, range_h, true),
 				nf = trans_range((float)now, (float)l, (float)u, range_l, range_h),
 				initf = trans_range((float)init, (float)l, (float)u, range_l, range_h);
-		sf = 333.30f;	// 全通……部分第三方需要固定该值 :( - 2023-10-25
+		sf = 333.30f;	// 全通……部分第三方需要固定该�?:( - 2023-10-25
 		switch (msg) {
 		case Msg::Get:
 		//	sf = 333.333f;
@@ -3887,7 +3889,7 @@ int huagao_ds::handle_scanner_event(int ev, bool from_event_proc)
 		break;
 	case SANE_EVENT_UI_CLOSE_CANCEL:
 		//scanner_->stop();
-		//notifyCloseCancel();	// 娣囶喖顦查悙鐟板毊鏉╂稑瀹冲?閸欐牗绉?閹稿鎸抽敍瀛禝娑撳秷鍏樺锝呯埗缂佹挻娼惃鍑歎G - added on 2023-02-14
+		//notifyCloseCancel();	// 娣囶喖顦查悙鐟板毊鏉╂稑瀹冲�?閸欐牗绉?閹稿鎸抽敍瀛禝娑撳秷鍏樺锝呯埗缂佹挻娼惃鍑歎G - added on 2023-02-14
 		//break;
 	case SANE_EVENT_UI_CLOSE_NORMAL:
 	case SANE_EVENT_SCAN_FINISHED: