diff --git a/scene/dataset_readers.py b/scene/dataset_readers.py
index 493d98d..9e935fb 100644
--- a/scene/dataset_readers.py
+++ b/scene/dataset_readers.py
@@ -211,6 +211,7 @@ def readColmapSceneInfo(path, images, depths, eval, train_test_exp, llffhold=8):
             xyz, rgb, _ = read_points3D_binary(bin_path)
         except:
             xyz, rgb, _ = read_points3D_text(txt_path)
+        assert xyz and rgb, f"Error loading {path} data. Point data must exist in either points3D.bin or points3D.txt"
         storePly(ply_path, xyz, rgb)
     try:
         pcd = fetchPly(ply_path)
@@ -312,4 +313,4 @@ def readNerfSyntheticInfo(path, white_background, depths, eval, extension=".png"
 sceneLoadTypeCallbacks = {
     "Colmap": readColmapSceneInfo,
     "Blender" : readNerfSyntheticInfo
-}
\ No newline at end of file
+}