diff --git a/pyren/convert_db.py b/pyren/convert_db.py
index dec482e..f86f38d 100755
--- a/pyren/convert_db.py
+++ b/pyren/convert_db.py
@@ -8,8 +8,6 @@ import zipfile
 from StringIO import StringIO
 import mod_db_manager
 
-mod_db_manager.find_DBs()
-
 from  mod_optfile import *
 
 if __name__ == "__main__":
@@ -22,6 +20,8 @@ if __name__ == "__main__":
     if not os.path.exists('./cache'):
         os.makedirs('./cache')
 
+    mod_db_manager.find_DBs()
+
     inputpath = sys.argv[1]
     ecudir = os.path.join (inputpath, "EcuRenault")
     vehicledir = os.path.join (inputpath, "Vehicles")
diff --git a/pyren/mod_db_manager.py b/pyren/mod_db_manager.py
index 9e57f7c..d788b87 100644
--- a/pyren/mod_db_manager.py
+++ b/pyren/mod_db_manager.py
@@ -183,6 +183,10 @@ def file_in_ddt( pattern ):
         file_list = glob.glob(os.path.join(mod_globals.ddtroot, pattern))
     else:
         file_list = mod_globals.ddt_arc.namelist()
+        if '(' in pattern:
+            pattern = pattern.replace('(','\(')
+        if ')' in pattern:
+            pattern = pattern.replace(')', '\)')
     regex = re.compile(pattern)
     li = list(filter(regex.search, file_list))
     return len(li)