diff --git a/src/layers/streetLevel/index.js b/src/layers/streetLevel/index.js
index f86b5fd00..67bbfb52d 100644
--- a/src/layers/streetLevel/index.js
+++ b/src/layers/streetLevel/index.js
@@ -60,7 +60,6 @@ export function createStreetLevelLayer({
       photoViewer || createMapillaryViewer({ source, render: services.render }),
   });
   parts.openImage = openImage;
-  parts.reportSequenceError = reportSequenceError;
   parts.selection = createSelection(context);
 
   let notifyQueued = false;
@@ -81,24 +80,6 @@ export function createStreetLevelLayer({
   }
   state.notify = notify;
 
-  /** The error a sequence lookup last showed, until it withdraws it. */
-  let sequenceError = null;
-
-  /**
-   * Show a sequence error, or withdraw it (null). A withdrawal clears only
-   * that error, never a newer one from the viewer.
-   */
-  function reportSequenceError(message) {
-    if (message) {
-      state.street.error = sequenceError = message;
-    } else {
-      if (!sequenceError) return;
-      if (state.street.error === sequenceError) state.street.error = null;
-      sequenceError = null;
-    }
-    notify();
-  }
-
   /** Coverage waits for the key status: no tile requests without a key. */
   async function checkKey() {
     let configured;
@@ -172,6 +153,7 @@ export function createStreetLevelLayer({
         selectedId: state.sequence.selectedId,
         images: state.sequence.images.length,
         loading: state.sequence.loading,
+        error: state.sequence.error,
       },
       street,
     };
@@ -228,7 +210,6 @@ export function createStreetLevelLayer({
       state.listeners.clear();
       state.viewer = null;
       state.initialized = false;
-      state.destroyed = true;
     },
 
     getStats() {
diff --git a/src/layers/streetLevel/index.test.mjs b/src/layers/streetLevel/index.test.mjs
index 3af933b05..26ce49345 100644
--- a/src/layers/streetLevel/index.test.mjs
+++ b/src/layers/streetLevel/index.test.mjs
@@ -205,7 +205,7 @@ test('switching Mapillary off clears coverage and closes the image it shows', as
   assert.equal(layer.getUIState().providerOn, false);
 });
 
-test('a sequence error is withdrawn with the sequence, never the viewer’s own', async (t) => {
+test('a sequence error goes with the sequence and leaves the viewer’s own', async (t) => {
   const source = fakeMapillarySource({
     getSequenceImages: async () => {
       throw new Error('Sequence images unavailable');
@@ -213,16 +213,15 @@ test('a sequence error is withdrawn with the sequence, never the viewer’s own'
   });
   const { layer } = await startLayer(t, { source });
   await layer.selectSequence('seq-1');
-  assert.equal(layer.getUIState().street.error, 'Sequence images unavailable');
-  layer.clearSequence();
-  assert.equal(layer.getUIState().street.error, null, 'withdrawn');
-
-  // The viewer's own error is not the sequence's to clear.
-  await layer.selectSequence('seq-2');
   layer.attachViewerHost(null);
   await layer.openImage('img1');
+  let ui = layer.getUIState();
+  assert.equal(ui.sequence.error, 'Sequence images unavailable');
+  assert.match(ui.street.error, /Open the Street Level panel/);
   layer.clearSequence();
-  assert.match(layer.getUIState().street.error, /Open the Street Level panel/);
+  ui = layer.getUIState();
+  assert.equal(ui.sequence.error, null, 'withdrawn with the sequence');
+  assert.match(ui.street.error, /Open the Street Level panel/, 'kept');
 });
 
 test('closing the photo, switching the layer off or destroying it stops the framing flight', async (t) => {
diff --git a/src/layers/streetLevel/providers/mapillary/decode.js b/src/layers/streetLevel/providers/mapillary/decode.js
index a3e06a5e1..ac2538b34 100644
--- a/src/layers/streetLevel/providers/mapillary/decode.js
+++ b/src/layers/streetLevel/providers/mapillary/decode.js
@@ -30,13 +30,8 @@ export function decodeCoverageTile(bytes, address) {
       if (!parts.length) continue;
       result.sequences.push({
         id: String(props.id ?? feature.id ?? `${x}/${y}/${i}`),
-        imageId: props.image_id != null ? String(props.image_id) : null,
         capturedAt: Number(props.captured_at) || 0,
         isPano: props.is_pano === true,
-        onFoot: props.foot === true,
-        quality: Number.isFinite(props.quality_score)
-          ? props.quality_score
-          : null,
         parts,
       });
     }
diff --git a/src/layers/streetLevel/providers/mapillary/sequences.js b/src/layers/streetLevel/providers/mapillary/sequences.js
index 887145a16..d71f24ee1 100644
--- a/src/layers/streetLevel/providers/mapillary/sequences.js
+++ b/src/layers/streetLevel/providers/mapillary/sequences.js
@@ -25,9 +25,6 @@ function normalizeSequenceImage(record) {
     compassAngle: Number(record.compass_angle) || 0,
     capturedAt: Number(record.captured_at) || 0,
     isPano: record.is_pano === true,
-    altitude: Number.isFinite(record.computed_altitude)
-      ? record.computed_altitude
-      : null,
   };
 }
 
@@ -56,11 +53,6 @@ export function createSequences({ state, source, parts }) {
     state.notify?.();
   }
 
-  /** Show a sequence error, or withdraw it (null); see `reportSequenceError`. */
-  function reportError(message) {
-    parts.reportSequenceError?.(message);
-  }
-
   /** Drawn cone billboards. */
   let cones = [];
 
@@ -151,7 +143,7 @@ export function createSequences({ state, source, parts }) {
       state.sequence.loading = false;
       state.sequence.images = cached;
       renderCones(cached);
-      reportError(null);
+      state.sequence.error = null;
       notify();
       return;
     }
@@ -177,13 +169,13 @@ export function createSequences({ state, source, parts }) {
       remember(sequenceId, images);
       state.sequence.images = images;
       renderCones(images);
-      reportError(null);
+      state.sequence.error = null;
     } catch (error) {
       if (!controller.signal.aborted) {
         // Nothing to show: drop the highlight, so a click asks again.
         parts.coverage.recolorSequence(sequenceId, false);
         state.sequence.selectedId = null;
-        reportError(error?.message || 'Sequence images unavailable');
+        state.sequence.error = error?.message || 'Sequence images unavailable';
       }
     } finally {
       if (state.sequence.abort === controller) {
@@ -203,7 +195,7 @@ export function createSequences({ state, source, parts }) {
     state.sequence.loading = false;
     clearCones();
     // An error about the sequence goes with it.
-    reportError(null);
+    state.sequence.error = null;
     requestRender();
     notify();
   }
diff --git a/src/layers/streetLevel/providers/mapillary/sequences.test.mjs b/src/layers/streetLevel/providers/mapillary/sequences.test.mjs
index 03c9834b0..5e2b8e0c7 100644
--- a/src/layers/streetLevel/providers/mapillary/sequences.test.mjs
+++ b/src/layers/streetLevel/providers/mapillary/sequences.test.mjs
@@ -58,7 +58,6 @@ function records(sequenceId, count = 2) {
 function setup() {
   const source = deferredSource();
   const colours = [];
-  const errors = [];
   const state = {
     services: {},
     viewer: {},
@@ -70,6 +69,7 @@ function setup() {
       cache: new Map(),
       collection: cones(),
       loading: false,
+      error: null,
       abort: null,
     },
   };
@@ -77,16 +77,15 @@ function setup() {
     coverage: {
       recolorSequence: (id, selected) => colours.push([id, selected]),
     },
-    reportSequenceError: (message) => errors.push(message),
   };
   const sequences = createSequences({ state, source, parts });
   const drawn = () =>
     state.sequence.collection.items.map((cone) => cone.id.split(':').at(-1));
-  return { state, source, sequences, colours, errors, drawn };
+  return { state, source, sequences, colours, drawn };
 }
 
 test('a failed sequence load leaves no stale cones and can be retried', async () => {
-  const { state, source, sequences, colours, errors, drawn } = setup();
+  const { state, source, sequences, colours, drawn } = setup();
   sequences.select('A');
   source.last('A').resolve(records('A'));
   await settle();
@@ -100,7 +99,7 @@ test('a failed sequence load leaves no stale cones and can be retried', async ()
   assert.equal(state.sequence.loading, false);
   assert.equal(state.sequence.selectedId, null, 'B is not left highlighted');
   assert.deepEqual(colours.at(-1), ['B', false]);
-  assert.deepEqual(errors, [null, 'Sequence images unavailable']);
+  assert.equal(state.sequence.error, 'Sequence images unavailable');
 
   // Clicking B again asks again.
   sequences.select('B');
@@ -109,7 +108,7 @@ test('a failed sequence load leaves no stale cones and can be retried', async ()
   await settle();
   assert.deepEqual(drawn(), ['B-0', 'B-1']);
   assert.equal(state.sequence.selectedId, 'B');
-  assert.equal(errors.at(-1), null, 'the error is cleared once B loads');
+  assert.equal(state.sequence.error, null, 'cleared once B loads');
 });
 
 test('a late answer for a superseded sequence neither draws nor is cached', async () => {
@@ -151,7 +150,7 @@ test('a cached sequence is re-selected without a lookup', async () => {
 });
 
 test('clearSelection cancels the lookup and uncolours the sequence', async () => {
-  const { state, source, sequences, colours, errors, drawn } = setup();
+  const { state, source, sequences, colours, drawn } = setup();
   sequences.select('A');
   sequences.clearSelection();
   assert.equal(source.last('A').signal.aborted, true);
@@ -161,7 +160,7 @@ test('clearSelection cancels the lookup and uncolours the sequence', async () =>
   ]);
   assert.equal(state.sequence.selectedId, null);
   assert.equal(state.sequence.loading, false);
-  assert.equal(errors.at(-1), null, 'an error about it goes too');
+  assert.equal(state.sequence.error, null, 'an error about it goes too');
   source.last('A').resolve(records('A'));
   await settle();
   assert.deepEqual(drawn(), [], 'the late answer draws nothing');
diff --git a/src/layers/streetLevel/providers/mapillary/viewer.js b/src/layers/streetLevel/providers/mapillary/viewer.js
index 8a9a041bf..36b6c4927 100644
--- a/src/layers/streetLevel/providers/mapillary/viewer.js
+++ b/src/layers/streetLevel/providers/mapillary/viewer.js
@@ -5,7 +5,6 @@ import { mapillaryImageUrl } from './policy.js';
  * @property {string} imageId
  * @property {{lon: number, lat: number}} position
  * @property {number|null} bearing
- * @property {number|null} tilt
  * @property {number|null} altitude
  * @property {boolean} isPano
  * @property {number|null} capturedAt   Epoch milliseconds.
@@ -94,7 +93,6 @@ export function createMapillaryViewer({ source, render } = {}) {
         ...current,
         position: { lon: lngLat.lng, lat: lngLat.lat },
         bearing: Number.isFinite(pov?.bearing) ? pov.bearing : null,
-        tilt: Number.isFinite(pov?.tilt) ? pov.tilt : 0,
         externalUrl: mapillaryImageUrl(current.imageId),
       });
       requestRender();
diff --git a/src/layers/streetLevel/state.js b/src/layers/streetLevel/state.js
index 1c8424447..fad616c1e 100644
--- a/src/layers/streetLevel/state.js
+++ b/src/layers/streetLevel/state.js
@@ -10,7 +10,6 @@ export function freshStreet() {
     imageId: null,
     position: null,
     bearing: null,
-    tilt: null,
     altitude: null,
     isPano: false,
     capturedAt: null,
@@ -55,7 +54,6 @@ export function createState({ services }) {
     viewer: null,
     enabled: false,
     initialized: false,
-    destroyed: false,
     listeners: new Set(),
     notify: null,
     /** The share link's `mapillary` switch: off draws nothing. */
@@ -78,6 +76,8 @@ export function createState({ services }) {
       cache: new Map(),
       collection: null,
       loading: false,
+      /** Why the selected sequence's images could not load, until it goes. */
+      error: null,
       abort: null,
     },
 
diff --git a/src/layers/streetLevel/viewerHost.js b/src/layers/streetLevel/viewerHost.js
index 87d58e85d..ad05fec47 100644
--- a/src/layers/streetLevel/viewerHost.js
+++ b/src/layers/streetLevel/viewerHost.js
@@ -23,7 +23,6 @@ export function createViewerHost({ state, parts, adapter }) {
       imageId: pose.imageId,
       position: pose.position ? { ...pose.position } : null,
       bearing: Number.isFinite(pose.bearing) ? pose.bearing : null,
-      tilt: Number.isFinite(pose.tilt) ? pose.tilt : 0,
       altitude: Number.isFinite(pose.altitude) ? pose.altitude : null,
       isPano: pose.isPano === true,
       capturedAt: pose.capturedAt ?? null,
diff --git a/src/ui/streetLevelPresentation.js b/src/ui/streetLevelPresentation.js
index 57fcad81f..cbe645417 100644
--- a/src/ui/streetLevelPresentation.js
+++ b/src/ui/streetLevelPresentation.js
@@ -118,7 +118,10 @@ export function presentStreetLevelPanel(state, { now = Date.now() } = {}) {
     controlsDisabled: state.keyRequired === true,
     error: keyMissing
       ? keyHint()
-      : state.street.error || state.coverage.error || null,
+      : state.street.error ||
+        state.sequence.error ||
+        state.coverage.error ||
+        null,
     filter: { pano: filter.pano, sinceDays: Number(filter.sinceDays) || 0 },
     since: presentSince(filter.sinceDays, now),
     legend: state.providerOn !== false,
diff --git a/src/ui/streetLevelPresentation.test.mjs b/src/ui/streetLevelPresentation.test.mjs
index cbcf4c34f..69b6a784f 100644
--- a/src/ui/streetLevelPresentation.test.mjs
+++ b/src/ui/streetLevelPresentation.test.mjs
@@ -124,7 +124,7 @@ test('the header pill is the on/off switch and reads OFF, LOADING or ON', () =>
   );
 });
 
-test('errors from the viewer or the coverage web surface in one alert', () => {
+test('errors from the viewer, the sequence or the coverage surface in one alert', () => {
   assert.equal(presentStreetLevelPanel(snapshot()).error, null);
   assert.equal(
     presentStreetLevelPanel(
@@ -132,6 +132,12 @@ test('errors from the viewer or the coverage web surface in one alert', () => {
     ).error,
     'Image could not be opened',
   );
+  assert.equal(
+    presentStreetLevelPanel(
+      snapshot({ sequence: { error: 'Sequence images unavailable' } }),
+    ).error,
+    'Sequence images unavailable',
+  );
   assert.equal(
     presentStreetLevelPanel(snapshot({ coverage: { error: 'Tile HTTP 502' } }))
       .error,