diff --git a/src/main/mesh.js b/src/main/mesh.js
index 29f2c032..8c0809a7 100644
--- a/src/main/mesh.js
+++ b/src/main/mesh.js
@@ -768,15 +768,35 @@ function space_init(data) {
 // fetched Blob wrapped in a File object looks identical to one the user
 // picked, so no new parsing/import logic is needed here at all.
 async function cmms_load_from_url(config) {
-    const response = await fetch(config.loadUrl);
-    if (!response.ok) {
-        log(`CMMS load failed: HTTP ${response.status}`).pin({});
-        return;
+    // restore_space() (the normal boot path) is intentionally skipped for a
+    // CMMS-scoped launch (this loads one specific file, not whatever was
+    // last open in this browser - see init()'s own comment above) - but its
+    // finalization tail (hide the loading curtain, enable handles, publish
+    // app_ready) only ever runs inside restore_space() itself, so skipping
+    // it meant the curtain never went away even after the file loaded fine
+    // underneath it (CMMS bug report, 2026-08-27: froze on the loading
+    // curtain despite attachment.php's fetch succeeding). app_ready
+    // subscribers never fired either - mesh/history.js's undo-tracking
+    // enable, mesh/build.js's doc-name label. try/finally so this always
+    // happens, even if the fetch or file itself fails - a file that can't
+    // load shouldn't leave the user stuck behind the curtain either.
+    try {
+        const response = await fetch(config.loadUrl);
+        if (!response.ok) {
+            log(`CMMS load failed: HTTP ${response.status}`).pin({});
+            return;
+        }
+        const buf = await response.arrayBuffer();
+        const name = config.originalName || 'attachment.stl';
+        const file = new File([buf], name, { type: 'application/octet-stream' });
+        await api.document.restoreOrCreate();
+        load_files([file]);
+    } finally {
+        boot_done();
+        handles.setEnabled(api.prefs.map.space.bounds ?? false);
+        api.file.set_doc_name(config.originalName || 'Untitled');
+        broker.publish("app_ready");
     }
-    const buf = await response.arrayBuffer();
-    const name = config.originalName || 'attachment.stl';
-    const file = new File([buf], name, { type: 'application/octet-stream' });
-    load_files([file]);
 }
 
 function load_files(files) {