diff --git a/src/Conference.ts b/src/Conference.ts
index 70d07c1..8f78b21 100644
--- a/src/Conference.ts
+++ b/src/Conference.ts
@@ -855,8 +855,8 @@ export class Conference {
         const until = Date.now() + inNextMinutes * 60000;
 
         const upcomingTalks: ITalk[] = [];
-        for (const t of Object.values(this.talks)) {
-            const talk = await t.getDefinition();
+        // Use this.backend.talks because we care about physical talks here too.
+        for (const talk of this.backend.talks.values()) {
             const talkEventTime = lambda(talk);
             // If null is returned then the talk does not have this event, so don't return it as upcoming.
             if (talkEventTime === null) continue;
diff --git a/src/Scheduler.ts b/src/Scheduler.ts
index e53e8b0..40de5c7 100644
--- a/src/Scheduler.ts
+++ b/src/Scheduler.ts
@@ -401,7 +401,8 @@ export class Scheduler {
             } else {
                 await this.client.sendHtmlText(confAud.roomId, `<h3>The talk will end shortly</h3>`);
             }
-        } else if (task.type === ScheduledTaskType.TalkStart1H && confTalk !== undefined) {
+        } else if (task.type === ScheduledTaskType.TalkStart1H) {
+            if (confTalk === undefined) return;
             // This stage is skipped entirely for physical auditoriums' talks, because it only serves to nag
             // TODO Do we need to ensure that coordinators have checked in?
 
@@ -445,11 +446,15 @@ export class Scheduler {
                 await this.client.sendHtmlText(confTalk.roomId, `<h3>Your talk ends in about 5 minutes</h3><p>The next talk will start automatically after yours.</p>`);
             }
             await this.client.sendHtmlText(confAud.roomId, `<h3>This talk ends in about 5 minutes</h3>` + (task.talk.qa_startTime !== null ? `<p>Ask questions here for the speakers!</p>`: ''));
-        } else if (task.type === ScheduledTaskType.TalkLivestreamEnd1M && confTalk !== undefined) {
+        } else if (task.type === ScheduledTaskType.TalkLivestreamEnd1M) {
+            if (confTalk === undefined) return;
             await this.client.sendHtmlText(confTalk.roomId, `<h3>Your talk ends in about 1 minute!</h3><p>The next talk will start automatically after yours. Wrap it up!</p>`);
         } else if (task.type === ScheduledTaskType.TalkEnd1M) {
+            // It's a bit spammy for a physical talk.
+            if (confTalk === undefined) return;
             await this.client.sendHtmlText(confAud.roomId, `<h3>This talk ends in about 1 minute!</h3>`);
-        } else if (task.type === ScheduledTaskType.TalkCheckin45M && confTalk !== undefined) {
+        } else if (task.type === ScheduledTaskType.TalkCheckin45M) {
+            if (confTalk === undefined) return;
             // TODO This is skipped entirely for physical talks, but do we want to ensure coordinators are checked-in?
 
             if (!task.talk.prerecorded) return;
@@ -486,7 +491,8 @@ export class Scheduler {
                 const resolved = (await resolveIdentifiers(this.client, userIds)).filter(p => p.mxid).map(p => p.mxid!);
                 await this.checkins.expectCheckinFrom(resolved);
             }
-        } else if (task.type === ScheduledTaskType.TalkCheckin30M && confTalk !== undefined) {
+        } else if (task.type === ScheduledTaskType.TalkCheckin30M) {
+            if (confTalk === undefined) return;
             // TODO This is skipped entirely for physical talks, but do we want to ensure coordinators are checked-in?
 
             if (!task.talk.prerecorded) return;
@@ -523,7 +529,8 @@ export class Scheduler {
                 const resolved = (await resolveIdentifiers(this.client, userIds)).filter(p => p.mxid).map(p => p.mxid!);
                 await this.checkins.expectCheckinFrom(resolved);
             } // else no complaints
-        } else if (task.type === ScheduledTaskType.TalkCheckin15M && confTalk !== undefined) {
+        } else if (task.type === ScheduledTaskType.TalkCheckin15M) {
+            if (confTalk === undefined) return;
             // TODO This is skipped entirely for physical talks, but do we want to ensure coordinators are checked-in?
 
             if (!task.talk.prerecorded) return;
diff --git a/src/commands/InviteCommand.ts b/src/commands/InviteCommand.ts
index 16bb623..37b5617 100644
--- a/src/commands/InviteCommand.ts
+++ b/src/commands/InviteCommand.ts
@@ -67,12 +67,13 @@ export class InviteCommand implements ICommand {
         } else if (args[0] && args[0] === "coordinators-support") {
             let people: IPerson[] = [];
             for (const aud of this.conference.storedAuditoriums) {
-                if (!(await aud.getId()).startsWith("D.")) {
+                // This hack was not wanted in 2023 or 2024. 
+                // if (!(await aud.getId()).startsWith("D.")) {
                     // HACK: Only invite coordinators for D.* auditoriums.
                     // TODO: Make invitations for support rooms more configurable.
                     //       https://github.com/matrix-org/this.conference-bot/issues/76
-                    continue;
-                }
+                //     continue;
+                // }
 
                 const inviteTargets = await this.conference.getInviteTargetsForAuditorium(aud, true);
                 people.push(...inviteTargets.filter(i => i.role === Role.Coordinator));
diff --git a/src/commands/actions/people.ts b/src/commands/actions/people.ts
index b42cd17..0542fe3 100644
--- a/src/commands/actions/people.ts
+++ b/src/commands/actions/people.ts
@@ -14,13 +14,14 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-import { LogService, MatrixClient } from "matrix-bot-sdk";
+import { LogLevel, LogService, MatrixClient } from "matrix-bot-sdk";
 import { ResolvedPersonIdentifier, resolveIdentifiers } from "../../invites";
 import { Auditorium } from "../../models/Auditorium";
 import { Conference } from "../../Conference";
 import { asyncFilter } from "../../utils";
 import { InterestRoom } from "../../models/InterestRoom";
 import { ConferenceMatrixClient } from "../../ConferenceMatrixClient";
+import { logMessage } from "../../LogProxy";
 
 export interface IAction {
     (client: MatrixClient, roomId: string, people: ResolvedPersonIdentifier[]): Promise<void>;
@@ -60,9 +61,12 @@ export async function doAuditoriumResolveAction(
         ? await conference.getInviteTargetsForAuditorium(realAud)
         : await conference.getModeratorsForAuditorium(realAud);
     const resolvedAudPeople = audPeople.map(p => allPossiblePeople.find(b => p.id === b.person.id));
-    if (resolvedAudPeople.some(p => !p)) throw new Error(`Failed to resolve all targets for auditorium ${audId}`);
+    if (resolvedAudPeople.some(p => !p)) {
+        logMessage(LogLevel.WARN, "people", `Failed to resolve all targets for auditorium ${audId}. Inviting others anyway.`, client);
+    }
 
-    await action(client, realAud.roomId, resolvedAudPeople as ResolvedPersonIdentifier[]);
+    const resolvedAudPeopleOnly = resolvedAudPeople.filter(p => !!p);
+    await action(client, realAud.roomId, resolvedAudPeopleOnly as ResolvedPersonIdentifier[]);
 
     if (!skipTalks) {
         const talks = await asyncFilter(
@@ -80,10 +84,11 @@ export async function doAuditoriumResolveAction(
                 const unresolveable = talkPeople.filter(
                     p => allPossiblePeople.find(b => p.id === b.person.id) === undefined
                 )
-                throw new Error(`Failed to resolve all targets for talk ${await talk.getId()}: ` + JSON.stringify(unresolveable));
+                logMessage(LogLevel.WARN, "people", `Failed to resolve all targets for talk ${await talk.getId()}: ` + JSON.stringify(unresolveable), client);
             }
 
-            await action(client, talk.roomId, resolvedTalkPeople as ResolvedPersonIdentifier[]);
+            const resolvedTalkPeopleOnly = resolvedTalkPeople.filter(p => !!p);
+            await action(client, talk.roomId, resolvedTalkPeopleOnly as ResolvedPersonIdentifier[]);
         }
     }
 }
diff --git a/src/web.ts b/src/web.ts
index 691631f..dc91c6e 100644
--- a/src/web.ts
+++ b/src/web.ts
@@ -37,9 +37,16 @@ export function renderAuditoriumWidget(req: Request, res: Response, conference:
         return res.sendStatus(404);
     }
 
+    //let sid = audId.toLowerCase().replace(/[^a-z0-9]/g, '');
+
+    // HACK for FOSDEM 2023 and FOSDEM 2024: transform auditorium IDs to the livestream ID
+    // 1. 'K1.105A (Words)' -> 'k1.105a'
+    // 2. 'k1.105a' -> 'k1105a'
+    let sid = audId.toLowerCase().replace(/\s+\(.+\)$/, '').replace(/[^a-z0-9]/g, '');
+
     const streamUrl = template(auditoriumUrl, {
         id: audId.toLowerCase(),
-        sId: audId.toLowerCase().replace(/[^a-z0-9]/g, ''),
+        sId: sid
     });
 
     return res.render('auditorium.liquid', {