diff --git a/src/entry/Maat_api.cpp b/src/entry/Maat_api.cpp
index 9ef5b47..afd232b 100644
--- a/src/entry/Maat_api.cpp
+++ b/src/entry/Maat_api.cpp
@@ -690,7 +690,10 @@ int Maat_table_callback_register(Maat_feather_t feather,short table_id,
 	p_table->cb_info->cb_plug[idx].u_para=u_para;
 	if(p_table->cb_info->line_num>0)
 	{
-		start(MAAT_RULE_UPDATE_TYPE_FULL,u_para);
+		if(start!=NULL)
+		{
+			start(MAAT_RULE_UPDATE_TYPE_FULL,u_para);
+		}
 		for(i=0;i<p_table->cb_info->line_num;i++)
 		{
 			lines=(const char*)dynamic_array_read(p_table->cb_info->cache_lines,i);
@@ -700,7 +703,10 @@ int Maat_table_callback_register(Maat_feather_t feather,short table_id,
 			}
 			update(table_id,lines,u_para);
 		}
-		finish(u_para);
+		if(finish!=NULL)
+		{
+			finish(u_para);
+		}
 	}
 	pthread_mutex_unlock(&(p_table->cb_info->plugin_mutex));
 	return 1;
diff --git a/src/entry/Maat_rule.cpp b/src/entry/Maat_rule.cpp
index ac03bec..aa761ce 100644
--- a/src/entry/Maat_rule.cpp
+++ b/src/entry/Maat_rule.cpp
@@ -26,7 +26,7 @@
 #include "mesa_fuzzy.h"
 #include "great_index_engine.h"
 
-int MAAT_FRAME_VERSION_1_7_20160510=1;
+int MAAT_FRAME_VERSION_1_7_20160525=1;
 const char *maat_module="MAAT Frame";
 
 const char* CHARSET_STRING[]={"NONE","gbk","big5","unicode","utf8","bin",
@@ -2441,7 +2441,10 @@ void maat_start_cb(unsigned int new_version,int update_type,void*u_para)
 		p_table_cb=p_table->cb_info;
 		for(j=0;j<p_table_cb->cb_plug_cnt;j++)
 		{
-			p_table_cb->cb_plug[j].start(update_type,p_table_cb->cb_plug[j].u_para);
+			if(p_table_cb->cb_plug[j].start!=NULL)
+			{
+				p_table_cb->cb_plug[j].start(update_type,p_table_cb->cb_plug[j].u_para);
+			}
 		}
 	}
 	return;
@@ -2471,7 +2474,10 @@ void maat_finish_cb(void* u_para)
 		p_table_cb=p_table->cb_info;
 		for(j=0;j<p_table_cb->cb_plug_cnt;j++)
 		{
-			p_table_cb->cb_plug[j].finish(p_table_cb->cb_plug[j].u_para);
+			if(p_table_cb->cb_plug[j].finish!=NULL)
+			{
+				p_table_cb->cb_plug[j].finish(p_table_cb->cb_plug[j].u_para);
+			}
 		}
 	}
 	if(feather->update_tmp_scanner!=NULL)
@@ -2485,7 +2491,7 @@ void maat_finish_cb(void* u_para)
 								"Full config version %u load %d entries complete.",
 								feather->update_tmp_scanner->version,feather->update_tmp_scanner->cfg_num);	
 	}
-	else
+	else if(feather->scanner!=NULL)
 	{
 		feather->scanner->cfg_num=total;
 		feather->scanner->version=feather->maat_version;
@@ -2506,6 +2512,12 @@ void maat_finish_cb(void* u_para)
 									feather->scanner->version,feather->scanner->cfg_num);
 		}
 	}
+	else
+	{
+		 MESA_handle_runtime_log(feather->logger,RLOG_LV_INFO,maat_module,
+                                                                        "Version %d have no valid scan rules, plugin callback complete.",
+                                                                        feather->maat_version);
+	}
 	return;
 }
 void maat_update_cb(const char* table_name,const char* line,void *u_para)