diff --git a/rai/core_test/block_store.cpp b/rai/core_test/block_store.cpp
index a41ed011af..928bf28269 100644
--- a/rai/core_test/block_store.cpp
+++ b/rai/core_test/block_store.cpp
@@ -410,16 +410,16 @@ TEST (block_store, bad_path)
     ASSERT_TRUE (init);
 }
 
-TEST (block_store, already_open)
+TEST (block_store, DISABLED_already_open) // File can be shared
 {
     auto path (rai::unique_path ());
-    boost::filesystem::create_directories (path);
+    boost::filesystem::create_directories (path.parent_path ());
     std::ofstream file;
-    file.open ((path / "accounts.ldb").string ().c_str ());
+    file.open (path.string ().c_str ());
     ASSERT_TRUE (file.is_open ());
     bool init (false);
     rai::block_store store (init, path);
-    ASSERT_FALSE (init);
+    ASSERT_TRUE (init);
 }
 
 TEST (block_store, delete_iterator_entry)
diff --git a/rai/node.cpp b/rai/node.cpp
index 2cd5bbb255..a7bd50ff4e 100644
--- a/rai/node.cpp
+++ b/rai/node.cpp
@@ -1379,7 +1379,7 @@ class send_visitor : public rai::block_visitor
 
 rai::node::node (rai::node_init & init_a, boost::shared_ptr <boost::asio::io_service> service_a, uint16_t port_a, boost::filesystem::path const & application_path_a, rai::processor_service & processor_a, rai::logging const & logging_a) :
 service (processor_a),
-store (init_a.block_store_init, application_path_a / "data"),
+store (init_a.block_store_init, application_path_a / "data.ldb"),
 gap_cache (*this),
 ledger (store),
 conflicts (*this),
diff --git a/rai/utility.cpp b/rai/utility.cpp
index cb8fc740c1..84d577edae 100644
--- a/rai/utility.cpp
+++ b/rai/utility.cpp
@@ -59,7 +59,7 @@ rai::uint128_t rai::scale_up (uint64_t amount_a)
 rai::mdb_env::mdb_env (bool & error_a, boost::filesystem::path const & path_a)
 {
 	boost::system::error_code error;
-	boost::filesystem::create_directories (path_a, error);
+	boost::filesystem::create_directories (path_a.parent_path (), error);
 	if (!error)
 	{
 		auto status1 (mdb_env_create (&environment));
@@ -68,7 +68,7 @@ rai::mdb_env::mdb_env (bool & error_a, boost::filesystem::path const & path_a)
 		assert (status2 == 0);
 		auto status3 (mdb_env_set_mapsize (environment, 1024 * 1024 * 1024));
 		assert (status3 == 0);
-		auto status4 (mdb_env_open (environment, path_a.string ().c_str (), 0, 00600));
+		auto status4 (mdb_env_open (environment, path_a.string ().c_str (), MDB_NOSUBDIR, 00600));
 		error_a = status4 != 0;
 	}
 	else