diff --git a/build/tools/MasterEditor/MenuSkipFlagTool/check_diff.sh b/build/tools/MasterEditor/MenuSkipFlagTool/check_diff.sh
new file mode 100755
index 0000000..1d19f1e
--- /dev/null
+++ b/build/tools/MasterEditor/MenuSkipFlagTool/check_diff.sh
@@ -0,0 +1,14 @@
+#!/bin/sh
+
+flag_tool="./MenuSkipFlagTool.exe"
+output_dir="output/"
+
+for file in $*
+do
+	echo "== diff $file ${output_dir}${file%.srl}_0_flag.srl"
+	diff $file ${output_dir}${file%.srl}_0_flag.srl
+	echo "== diff $file ${output_dir}${file%.srl}_1_disable.srl"
+	diff $file ${output_dir}${file%.srl}_1_disable.srl
+	echo "== diff ${output_dir}${file%.srl}_1_flag.srl ${output_dir}${file%.srl}_0_disable.srl"
+	diff ${output_dir}${file%.srl}_1_flag.srl ${output_dir}${file%.srl}_0_disable.srl
+done
diff --git a/build/tools/MasterEditor/MenuSkipFlagTool/main.c b/build/tools/MasterEditor/MenuSkipFlagTool/main.c
index 6d8a94b..fd18513 100644
--- a/build/tools/MasterEditor/MenuSkipFlagTool/main.c
+++ b/build/tools/MasterEditor/MenuSkipFlagTool/main.c
@@ -85,13 +85,13 @@ void usage()
 {
     printf( "-----------------------------------------------------------------------------\n" );
     printf( "Usage: MenuSkipFlagTool.exe input_file output_file enable-flag\n" );
-    printf( "  input_file  : a ROM data file (generated by makerom.TWL).\n" );
+    printf( "  input_file  : a ROM data file.\n" );
     printf( "  output_file : a destination file.\n" );
     printf( "  enable-flag : 1 or 0. If 1, menu-skip flag will be enabled.\n" );
     printf( "\nOption:\n" );
     printf( "-h    : print help only.\n" );
     printf( "-f    : force to overwrite a output_file.\n" );
-    printf( "-d    : disable the mesu-skip flag, when enable-flag is 1.\n" );
+    printf( "-d    : disable the menu-skip flag, when enable-flag is 1.\n" );
 	printf( "-----------------------------------------------------------------------------\n" );
 }
 
@@ -283,6 +283,7 @@ static BOOL iEnableFlag( SContext *pContext )
         (rh.s.platform_code != PLATFORM_CODE_TWL_LIMITED) )
     {
         printf("\n*** Error: Illegal platform (%d). ***\n", rh.s.platform_code);
+        return FALSE;
     }
 
     printf("InitialCode      : %c%c%c%c\n", rh.s.game_code[0], rh.s.game_code[1], rh.s.game_code[2], rh.s.game_code[3]);
@@ -352,6 +353,7 @@ static BOOL iEnableFlag( SContext *pContext )
         if( !DecryptSignRomHeader( &rh ) )
         {
             printf( "Decrypt the sign : Failed\n" );
+            printf("\n*** Error: Invalid sigunature. ***\n");
             return FALSE;
         }
         printf( "Decrypt the sign : Succeeded\n" );
@@ -393,6 +395,7 @@ static BOOL iEnableFlag( SContext *pContext )
         if( !SignRomHeader( &rh ) )
         {
             printf( "Encrypt the sign : Failed\n" );
+            printf("\n*** Error: Failed to encrypt the sigunature. ***\n");
             return FALSE;
         }
         printf( "Encrypt the sign : Succeeded\n" );
diff --git a/build/tools/MasterEditor/MenuSkipFlagTool/make_test_rom.sh b/build/tools/MasterEditor/MenuSkipFlagTool/make_test_rom.sh
new file mode 100755
index 0000000..87a7678
--- /dev/null
+++ b/build/tools/MasterEditor/MenuSkipFlagTool/make_test_rom.sh
@@ -0,0 +1,20 @@
+#!/bin/sh
+
+flag_tool="./MenuSkipFlagTool.exe"
+output_dir="output/"
+
+if [ -d ${output_dir} ];
+then
+	echo "skip make directory"
+else
+	echo "make directory"
+	mkdir ${output_dir}
+fi
+
+for file in $*
+do
+	$flag_tool $file ${output_dir}${file%.srl}_1_flag.srl 1
+	$flag_tool $file ${output_dir}${file%.srl}_0_flag.srl 0
+	$flag_tool ${output_dir}${file%.srl}_1_flag.srl ${output_dir}${file%.srl}_1_disable.srl 1 -d
+	$flag_tool ${output_dir}${file%.srl}_1_flag.srl ${output_dir}${file%.srl}_0_disable.srl 0 -d
+done