diff --git a/build/tools/MasterEditor/MasterEditorTWL/MasterEditorTWL.ncb b/build/tools/MasterEditor/MasterEditorTWL/MasterEditorTWL.ncb
index 551626d..4ff7685 100644
Binary files a/build/tools/MasterEditor/MasterEditorTWL/MasterEditorTWL.ncb and b/build/tools/MasterEditor/MasterEditorTWL/MasterEditorTWL.ncb differ
diff --git a/build/tools/MasterEditor/MasterEditorTWL/MasterEditorTWL.suo b/build/tools/MasterEditor/MasterEditorTWL/MasterEditorTWL.suo
index b199fdf..0dbb163 100644
Binary files a/build/tools/MasterEditor/MasterEditorTWL/MasterEditorTWL.suo and b/build/tools/MasterEditor/MasterEditorTWL/MasterEditorTWL.suo differ
diff --git a/build/tools/MasterEditor/MasterEditorTWL/MasterEditorTWL/Debug/BuildLog.htm b/build/tools/MasterEditor/MasterEditorTWL/MasterEditorTWL/Debug/BuildLog.htm
index 69319ac..586e49d 100644
Binary files a/build/tools/MasterEditor/MasterEditorTWL/MasterEditorTWL/Debug/BuildLog.htm and b/build/tools/MasterEditor/MasterEditorTWL/MasterEditorTWL/Debug/BuildLog.htm differ
diff --git a/build/tools/MasterEditor/MasterEditorTWL/MasterEditorTWL/Form1.h b/build/tools/MasterEditor/MasterEditorTWL/MasterEditorTWL/Form1.h
index e1551cc..e1d178f 100644
--- a/build/tools/MasterEditor/MasterEditorTWL/MasterEditorTWL/Form1.h
+++ b/build/tools/MasterEditor/MasterEditorTWL/MasterEditorTWL/Form1.h
@@ -3431,7 +3431,7 @@ private: System::Windows::Forms::TextBox^  tboxWarningChinaRating;
 		{
 			System::Reflection::Assembly ^ass = System::Reflection::Assembly::GetEntryAssembly();
 			System::Version ^ver =  ass->GetName()->Version;
-			return ( ver->Major.ToString() + "." + ver->Minor.ToString() );
+			return ( ver->Major.ToString() + "." + ver->Minor.ToString() + "a" );
 		}
 
 		// SRLに登録されないROM仕様のフォーム入力を
diff --git a/build/tools/MasterEditor/MasterEditorTWL/MasterEditorTWL/Release/BuildLog.htm b/build/tools/MasterEditor/MasterEditorTWL/MasterEditorTWL/Release/BuildLog.htm
index d0b9be1..32cda6f 100644
Binary files a/build/tools/MasterEditor/MasterEditorTWL/MasterEditorTWL/Release/BuildLog.htm and b/build/tools/MasterEditor/MasterEditorTWL/MasterEditorTWL/Release/BuildLog.htm differ
diff --git a/build/tools/MasterEditor/MasterEditorTWL/MasterEditorTWL/srl_mrc.cpp b/build/tools/MasterEditor/MasterEditorTWL/MasterEditorTWL/srl_mrc.cpp
index 8e38b7c..335b8b3 100644
--- a/build/tools/MasterEditor/MasterEditorTWL/MasterEditorTWL/srl_mrc.cpp
+++ b/build/tools/MasterEditor/MasterEditorTWL/MasterEditorTWL/srl_mrc.cpp
@@ -232,6 +232,12 @@ ECSrlResult RCSrl::mrcTWL( FILE *fp )
 {
 	// ROMヘッダのチェック (NTR互換領域)
 
+	// 開始アドレスが0x02004000よりも前のときにはエラー
+	if( (u32)(this->pRomHeader->s.main_ram_address) < 0x02004000 )
+	{
+		this->hErrorList->Add( this->makeMrcError("RomStartAddress") );
+	}
+
 	// NANDアプリがHYBRIDとなるのはクローンブートのときのみ
 	if( this->IsMediaNand )
 	{
diff --git a/build/tools/MasterEditor/MasterEditorTWL/resource/mrc_msg_e.xml b/build/tools/MasterEditor/MasterEditorTWL/resource/mrc_msg_e.xml
index 2dcd97e..d8ba3c9 100644
Binary files a/build/tools/MasterEditor/MasterEditorTWL/resource/mrc_msg_e.xml and b/build/tools/MasterEditor/MasterEditorTWL/resource/mrc_msg_e.xml differ
diff --git a/build/tools/MasterEditor/MasterEditorTWL/resource/mrc_msg_j.xml b/build/tools/MasterEditor/MasterEditorTWL/resource/mrc_msg_j.xml
index 2a15543..e633078 100644
--- a/build/tools/MasterEditor/MasterEditorTWL/resource/mrc_msg_j.xml
+++ b/build/tools/MasterEditor/MasterEditorTWL/resource/mrc_msg_j.xml
@@ -1,7 +1,18 @@
 �ｻｿ<?xml version="1.0" encoding="UTF-8"?>
 <message>
 
-<!-- 闍ｱ險ｳ萓晞�ｼ 縺薙％縺九ｉ (ver.1.6 霑ｽ蜉�繝｡繝�繧ｻ繝ｼ繧ｸ) -->
+<!-- 闍ｱ險ｳ萓晞�ｼ 縺薙％縺九ｉ (ver.1.7 霑ｽ蜉�繝｡繝�繧ｻ繝ｼ繧ｸ) -->
+
+	<!-- RomStart Address CW -->
+	<RomStartAddress>
+		<name>繧ｹ繧ｿ繝ｼ繝医い繝峨Ξ繧ｹ</name>
+		<sentence>ROM縺ｮ繧ｹ繧ｿ繝ｼ繝医い繝峨Ξ繧ｹ縺ｯ縲�0x02004000莉･髯阪〒縺ｪ縺代ｌ縺ｰ縺ｪ繧翫∪縺帙ｓ縲�</sentence>
+		<begin>28</begin><end>2b</end><modify>False</modify><affect>True</affect>
+	</RomStartAddress>
+
+<!-- 闍ｱ險ｳ萓晞�ｼ 縺薙％縺ｾ縺ｧ -->
+
+<!-- (ver.1.6 霑ｽ蜉�繝｡繝�繧ｻ繝ｼ繧ｸ 縺薙％縺九ｉ) -->
 
 	<!-- Clone Boot -->
 	<NandHybridBefore51PR>
@@ -158,7 +169,7 @@
 		<begin>1d</begin><end>1d</end><modify>False</modify><affect>True</affect>
 	</NormalJumpAndTmpJump>
 
-<!-- 闍ｱ險ｳ萓晞�ｼ 縺薙％縺ｾ縺ｧ -->
+<!-- (ver.1.6霑ｽ蜉�繝｡繝�繧ｻ繝ｼ繧ｸ 縺薙％縺ｾ縺ｧ) -->
 
 	<!-- NTR Compatible Area -->
 	<TitleNameAscii>