diff --git a/index/fragment_container.go b/index/fragment_container.go
index fe0a00ca8..d448b9ce6 100644
--- a/index/fragment_container.go
+++ b/index/fragment_container.go
@@ -238,7 +238,7 @@ func getStorage(db string, slice int, frame string) Storage {
 func NewFragment(frag_id SUUID, db string, slice int, frame string) *Fragment {
 	var impl Pilosa
 	log.Println(fmt.Sprintf("XXXXXXXXXXXXXXXXXXXXXXXXXXX(%s)", frame))
-	if strings.HasSuffix(frame, ".") {
+	if strings.HasSuffix(frame, ".n") {
 		log.Println(frame + "TOP")
 		impl = NewBrand(db, frame, slice, getStorage(db, slice, frame), 50000, 45000, 100)
 	} else {
diff --git a/index/general.go b/index/general.go
index 41c70e8dc..148d6c723 100644
--- a/index/general.go
+++ b/index/general.go
@@ -59,8 +59,9 @@ func (self *General) SetBit(bitmap_id uint64, bit_pos uint64, filter uint64) boo
 	return change
 }
 func (self *General) TopN(b IBitmap, n int, categories []uint64) []Pair {
+	var empty []Pair
 
-	return nil
+	return empty
 }
 func (self *General) Store(bitmap_id uint64, bm IBitmap, filter uint64) {
 	//oldbm:=self.Get(bitmap_id)
diff --git a/index/storage_cass.go b/index/storage_cass.go
index 347afc494..2550d4db9 100644
--- a/index/storage_cass.go
+++ b/index/storage_cass.go
@@ -53,7 +53,7 @@ func (c *CassandraStorage) Fetch(bitmap_id uint64, db string, frame string, slic
 		chunk_key, block int64
 		block_index      uint32
 		s8               uint8
-		filter           uint64
+		filter           int
 	)
 	log.Println("FETCHING ", bitmap_id, db, slice)
 
@@ -77,7 +77,7 @@ func (c *CassandraStorage) Fetch(bitmap_id uint64, db string, frame string, slic
 
 	}
 	bitmap.SetCount(uint64(count))
-	return bitmap, filter
+	return bitmap, uint64(filter)
 }
 
 func (c *CassandraStorage) Store(id int64, db string, frame string, slice int, filter uint64, bitmap *Bitmap) error {
@@ -103,7 +103,7 @@ func (c *CassandraStorage) Store(id int64, db string, frame string, slice int, f
 func (c *CassandraStorage) StoreBlock(id int64, db string, frame string, slice int, filter uint64, chunk int64, block_index int32, block int64) error {
 
 	if err := c.db.Query(`
-        INSERT INTO bitmap ( bitmap_id, db, frame, slice , filter, ChunkKey, BlockIndex, block) VALUES (?,?,?,?,?,?,?,?);`, id, db, frame, slice, filter, chunk, block_index, block).Exec(); err != nil {
+        INSERT INTO bitmap ( bitmap_id, db, frame, slice , filter, ChunkKey, BlockIndex, block) VALUES (?,?,?,?,?,?,?,?);`, id, db, frame, slice, int(filter), chunk, block_index, block).Exec(); err != nil {
 		log.Println(err)
 		log.Println("INSERT ", id, chunk, block_index)
 		return err