diff --git a/setup.py b/setup.py
index 81e46c0..6ac73a1 100755
--- a/setup.py
+++ b/setup.py
@@ -40,7 +40,7 @@ except:
 
 setuptools.setup(
         name='warcprox',
-        version='2.4b2.dev175',
+        version='2.4b2.dev176',
         description='WARC writing MITM HTTP/S proxy',
         url='https://github.com/internetarchive/warcprox',
         author='Noah Levitt',
diff --git a/warcprox/dedup.py b/warcprox/dedup.py
index 83f3e0a..81be2ea 100644
--- a/warcprox/dedup.py
+++ b/warcprox/dedup.py
@@ -497,7 +497,13 @@ class TroughDedupDb(DedupDb, DedupableMixin):
         return BatchTroughStorer(self, self.options)
 
     def start(self):
-        self._trough_cli.register_schema(self.SCHEMA_ID, self.SCHEMA_SQL)
+        try:
+            self._trough_cli.register_schema(self.SCHEMA_ID, self.SCHEMA_SQL)
+        except Exception as e:
+            # can happen. hopefully someone else has registered it
+            self.logger.critical(
+                    'will try to continue after problem registering schema %s',
+                    self.SCHEMA_ID, exc_info=True)
 
     def save(self, digest_key, response_record, bucket='__unspecified__'):
         record_id = response_record.get_header(warctools.WarcRecord.ID)