diff --git a/streaming/stream_sexp_generic.py b/streaming/stream_sexp_generic.py
index 52cbb92..b5d3f82 100644
--- a/streaming/stream_sexp_generic.py
+++ b/streaming/stream_sexp_generic.py
@@ -74,7 +74,13 @@ class StreamInterpreter:
         self.primitives: Dict[str, Any] = {}
         self.effects: Dict[str, dict] = {}
         self.macros: Dict[str, dict] = {}
-        self.primitive_lib_dir = self.sexp_dir.parent / "sexp_effects" / "primitive_libs"
+        # Try multiple locations for primitive_libs
+        possible_paths = [
+            self.sexp_dir.parent / "sexp_effects" / "primitive_libs",  # recipes/ subdir
+            self.sexp_dir / "sexp_effects" / "primitive_libs",  # app root
+            Path(__file__).parent.parent / "sexp_effects" / "primitive_libs",  # relative to interpreter
+        ]
+        self.primitive_lib_dir = next((p for p in possible_paths if p.exists()), possible_paths[0])
 
         self.frame_pipeline = None