Fix syntax error - remove orphaned except block and fix indentation

- Remove orphaned 'except Exception as e:' block that had no matching try
- Fix indentation for wan scheduler configuration
- Change 'I2V model loaded' to generic 'Model loaded' message

videogen

@@ -8780,22 +8780,18 @@ def main(args):
                 except:
                     pass
 
-                if "wan" in args.model and hasattr(pipe, "scheduler"):
-                    try:
-                        pipe.scheduler = UniPCMultistepScheduler.from_config(
-                            pipe.scheduler.config,
-                            prediction_type="flow_prediction",
-                            flow_shift=extra.get("flow_shift", 3.0)
-                        )
-                    except:
-                        pass
-                
-                print(f"  ✅ I2V model loaded successfully")
-                timing.end_step()  # i2v_model_loading
-                
-            except Exception as e:
-                print(f"❌ Failed to load I2V model: {e}")
-                sys.exit(1)
+            if "wan" in args.model and hasattr(pipe, "scheduler"):
+                try:
+                    pipe.scheduler = UniPCMultistepScheduler.from_config(
+                        pipe.scheduler.config,
+                        prediction_type="flow_prediction",
+                        flow_shift=extra.get("flow_shift", 3.0)
+                    )
+                except:
+                    pass
+            
+            print(f"  ✅ Model loaded successfully")
+            timing.end_step()  # model_loading
 
     # ─── Audio Generation (Pre-video) ──────────────────────────────────────────
     audio_path = None