diff --git a/src/geode/basic/zip_file.cpp b/src/geode/basic/zip_file.cpp
index 9633e7477..19a4966ef 100644
--- a/src/geode/basic/zip_file.cpp
+++ b/src/geode/basic/zip_file.cpp
@@ -142,6 +142,12 @@ namespace geode
     public:
         Impl( std::string_view file, std::string_view unarchive_temp_filename )
         {
+            if( !std::filesystem::exists( file ) )
+            {
+                throw OpenGeodeBasicException( nullptr,
+                    OpenGeodeException::TYPE::data,
+                    "[UnzipFile] File to unzip doesn't exist" );
+            }
             directory_ = create_directory( file, unarchive_temp_filename );
             if( !load_zip_into_memory( file ) || !open_reader() )
             {
diff --git a/src/geode/mesh/core/grid.cpp b/src/geode/mesh/core/grid.cpp
index 4ac885ee3..a58ba952a 100644
--- a/src/geode/mesh/core/grid.cpp
+++ b/src/geode/mesh/core/grid.cpp
@@ -185,8 +185,11 @@ namespace geode
                 OpenGeodeMeshException::check_exception( diff == 0 || diff == 1,
                     nullptr, OpenGeodeException::TYPE::data,
                     "[Grid::cell_local_vertex] vertex [", vertex_id[0], ",",
-                    vertex_id[1], "] is not part of cell [", cell_id[0], ",",
-                    cell_id[1], "] vertices." );
+                    vertex_id[1],
+                    dimension == 3 ? absl::StrCat( ",", vertex_id[2] ) : "",
+                    "] is not part of cell [", cell_id[0], ",", cell_id[1],
+                    dimension == 3 ? absl::StrCat( ",", cell_id[2] ) : "",
+                    "] vertices." );
                 result += diff * ( 1 << d );
             }
             return result;