diff --git a/hugo-site/static/js/small-world-comparison.js b/hugo-site/static/js/small-world-comparison.js
index d05dcf98..44a49a1b 100644
--- a/hugo-site/static/js/small-world-comparison.js
+++ b/hugo-site/static/js/small-world-comparison.js
@@ -258,10 +258,12 @@ waitForD3().then(() => {
         }
         statsSvg.selectAll('*').remove();
         
-        // Create SVG with fixed dimensions
+        // Define dimensions first
         const margin = {top: 30, right: 60, bottom: 40, left: 60};
-        const width = 245 - margin.left - margin.right;
-        const height = 245 - margin.top - margin.bottom;
+        const svgWidth = 245;
+        const svgHeight = 245;
+        const width = svgWidth - margin.left - margin.right;
+        const height = svgHeight - margin.top - margin.bottom;
         
         // Clear previous content
         if (statsSvg) {
diff --git a/hugo-site/static/js/small-world-scale.js b/hugo-site/static/js/small-world-scale.js
index 4c5d6aee..b85f1c23 100644
--- a/hugo-site/static/js/small-world-scale.js
+++ b/hugo-site/static/js/small-world-scale.js
@@ -209,7 +209,7 @@ waitForD3().then(() => {
             }
 
             // Use pre-computed adjacency list
-            const neighbors = adjacencyLists.get(node);
+            const neighbors = adjacencyLists.get(node) || [];
             for (const neighbor of neighbors) {
                 if (!visited.has(neighbor.index)) {
                     visited.add(neighbor.index);
@@ -413,7 +413,9 @@ waitForD3().then(() => {
             const btn = document.getElementById('scalePlayPauseBtn');
             const icon = btn.querySelector('i');
             icon.className = 'fas fa-play';
-            cancelAnimationFrame(animationFrameId);
+            if (animationFrame) {
+                cancelAnimationFrame(animationFrame);
+            }
         }
     }