diff --git a/modules/rsplat/components/folk-splat-viewer.ts b/modules/rsplat/components/folk-splat-viewer.ts
index c6b74c5..b304278 100644
--- a/modules/rsplat/components/folk-splat-viewer.ts
+++ b/modules/rsplat/components/folk-splat-viewer.ts
@@ -609,10 +609,23 @@ export class FolkSplatViewer extends HTMLElement {
         // Ticker keeps running — progress bar continues advancing during polling
 
         // Poll for completion
+        let poll404Count = 0;
         const pollInterval = setInterval(async () => {
           try {
             const pollRes = await fetch(`/api/3d-gen/${job_id}`);
-            if (!pollRes.ok) return;
+            if (!pollRes.ok) {
+              if (pollRes.status === 404 && ++poll404Count >= 3) {
+                // Job lost — server likely restarted
+                stopTicker();
+                clearInterval(pollInterval);
+                progress.style.display = "none";
+                status.textContent = "Job lost — server restarted. Please try again.";
+                actions.style.display = "flex";
+                submitBtn.disabled = false;
+              }
+              return;
+            }
+            poll404Count = 0;
             const job = await pollRes.json() as any;
 
             if (job.status === "complete") {