diff --git a/cellpack/autopack/Environment.py b/cellpack/autopack/Environment.py
index e50b18b0..023d4dcb 100644
--- a/cellpack/autopack/Environment.py
+++ b/cellpack/autopack/Environment.py
@@ -157,7 +157,8 @@ def __init__(self, config=None, recipe=None):
             f"{self.out_folder}/{self.name}_{config['name']}_{self.version}_grid.dat"
         )
         if recipe.get("grid_file_path") is not None:
-            self.grid_file_out = recipe["grid_file_path"]
+            if os.path.isfile(recipe["grid_file_path"]):
+                self.grid_file_out = recipe["grid_file_path"]
 
         should_load_grid_file = (
             os.path.isfile(self.grid_file_out) and self.load_from_grid_file