wrap all in check

Signed-off-by: Francis Williams <francis@fwilliams.info>

Author: fwilliams

fvdb/viz/_viewer_server.py

@@ -58,13 +58,14 @@ def init(ip_address: str = "127.0.0.1", port: int = 8080, vk_device_id: int = 0,
     """
     global _viewer_server_cpp
     if _viewer_server_cpp is None:
-        import nanovdb_editor as editor
-
-        compiler = editor.Compiler()
-        compute = editor.Compute(compiler)
-        di = compute.device_interface()
-        di.create_device_manager(enable_validation=False)
         try:
+            import nanovdb_editor as editor
+
+            compiler = editor.Compiler()
+            compute = editor.Compute(compiler)
+            di = compute.device_interface()
+            di.create_device_manager(enable_validation=False)
+
             di.create_device(device_index=vk_device_id, enable_external_usage=False)
         except Exception as e:
             raise RuntimeError(