diff --git a/SuperScriptMaterializer/script_export.cpp b/SuperScriptMaterializer/script_export.cpp
index 1032ab3..9328aba 100644
--- a/SuperScriptMaterializer/script_export.cpp
+++ b/SuperScriptMaterializer/script_export.cpp
@@ -91,7 +91,9 @@ inline void proc_pIn(CKParameterIn* cache, database* db, dbDataStructHelper* hel
 	helper->_db_pIn->thisobj = cache->GetID();
 	helper->_db_pIn->index = index;
 	strcpy(helper->_db_pIn->name, cache->GetName());
-	strcpy(helper->_db_pIn->type, helper->_parameterManager->ParameterTypeToName(cache->GetType()));
+	CKParameterType vaildTypeChecker = cache->GetType();
+	if (vaildTypeChecker != -1) strcpy(helper->_db_pIn->type, helper->_parameterManager->ParameterTypeToName(cache->GetType())); //known types
+	else strcpy(helper->_db_pIn->type, "!!UNKNOW TYPE!!"); //unknow type
 	helper->_db_pIn->type_guid[0] = cache->GetGUID().d1;
 	helper->_db_pIn->type_guid[1] = cache->GetGUID().d2;
 	helper->_db_pIn->belong_to = parents;
@@ -109,7 +111,9 @@ inline void proc_pOut(CKParameterOut* cache, database* db, dbDataStructHelper* h
 	helper->_db_pOut->thisobj = cache->GetID();
 	helper->_db_pOut->index = index;
 	strcpy(helper->_db_pOut->name, cache->GetName());
-	strcpy(helper->_db_pOut->type, helper->_parameterManager->ParameterTypeToName(cache->GetType()));
+	CKParameterType vaildTypeChecker = cache->GetType();
+	if (vaildTypeChecker != -1) strcpy(helper->_db_pOut->type, helper->_parameterManager->ParameterTypeToName(cache->GetType())); //known types
+	else strcpy(helper->_db_pOut->type, "!!UNKNOW TYPE!!"); //unknow type
 	helper->_db_pOut->type_guid[0] = cache->GetGUID().d1;
 	helper->_db_pOut->type_guid[1] = cache->GetGUID().d2;
 	helper->_db_pOut->belong_to = parents;
@@ -194,7 +198,9 @@ inline void proc_bLink(CKBehaviorLink* cache, database* db, dbDataStructHelper*
 inline void proc_pLocal(CKParameterLocal* cache, database* db, dbDataStructHelper* helper, EXPAND_CK_ID parents, BOOL is_setting) {
 	helper->_db_pLocal->thisobj = cache->GetID();
 	strcpy(helper->_db_pLocal->name, cache->GetName() ? cache->GetName() : "");
-	strcpy(helper->_db_pLocal->type, helper->_parameterManager->ParameterTypeToName(cache->GetType()));
+	CKParameterType vaildTypeChecker = cache->GetType();
+	if (vaildTypeChecker != -1) strcpy(helper->_db_pLocal->type, helper->_parameterManager->ParameterTypeToName(cache->GetType())); //known types
+	else strcpy(helper->_db_pLocal->type, "!!UNKNOW TYPE!!"); //unknow type
 	helper->_db_pLocal->type_guid[0] = cache->GetGUID().d1;
 	helper->_db_pLocal->type_guid[1] = cache->GetGUID().d2;
 	helper->_db_pLocal->is_setting = is_setting;
diff --git a/SuperScriptViewer/DecoratorCore.py b/SuperScriptViewer/DecoratorCore.py
index 9f90a15..80739ee 100644
--- a/SuperScriptViewer/DecoratorCore.py
+++ b/SuperScriptViewer/DecoratorCore.py
@@ -145,6 +145,7 @@ def buildBlock(exDb, deDb, target, currentGraphBlockCell):
         else:
             layer_height[curLayer] = max(layer_height.get(curLayer, 0), bbResult[i].height)
     layer_height[arrangedLayer] = layer_height.get(arrangedLayer, 0) # make sure misc bb height exist
+    layer_height[2] = layer_height.get(2, 0)    # make sure at least have a bb layer (when there are no bb in a map)
 
     # calc bb Y
     baseY = dcv.GRAPH_CONTENTOFFSET_Y
diff --git a/SuperScriptViewer/SuperScriptViewer.py b/SuperScriptViewer/SuperScriptViewer.py
index 07388bc..bd898c7 100644
--- a/SuperScriptViewer/SuperScriptViewer.py
+++ b/SuperScriptViewer/SuperScriptViewer.py
@@ -4,7 +4,7 @@ import os
 import sys
 
 # debug use
-os.remove('decorate.db')
+# os.remove('decorate.db')
 
 print('Super Script View')
 if not os.path.isfile("decorate.db"):