diff --git a/.changeset/many-ligers-pump.md b/.changeset/many-ligers-pump.md
new file mode 100644
index 000000000..a80fcbd09
--- /dev/null
+++ b/.changeset/many-ligers-pump.md
@@ -0,0 +1,6 @@
+---
+"trigger.dev": patch
+"@trigger.dev/core": patch
+---
+
+Handle string and non-stringifiable outputs like functions
diff --git a/apps/webapp/app/entry.server.tsx b/apps/webapp/app/entry.server.tsx
index 85cbfce81..7893f01ab 100644
--- a/apps/webapp/app/entry.server.tsx
+++ b/apps/webapp/app/entry.server.tsx
@@ -182,11 +182,3 @@ export { apiRateLimiter } from "./services/apiRateLimit.server";
 export { socketIo } from "./v3/handleSocketIo.server";
 export { wss } from "./v3/handleWebsockets.server";
 export { registryProxy } from "./v3/registryProxy.server";
-
-process.on("uncaughtException", (error, origin) => {
-  logger.error("Uncaught Exception", { error, origin });
-});
-
-process.on("unhandledRejection", (reason, promise) => {
-  logger.error("Unhandled Rejection", { reason });
-});
diff --git a/apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.v3.$projectParam.runs.$runParam.spans.$spanParam/route.tsx b/apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.v3.$projectParam.runs.$runParam.spans.$spanParam/route.tsx
index a8475ef38..8ae95dd16 100644
--- a/apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.v3.$projectParam.runs.$runParam.spans.$spanParam/route.tsx
+++ b/apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.v3.$projectParam.runs.$runParam.spans.$spanParam/route.tsx
@@ -222,19 +222,25 @@ function PacketDisplay({
   dataType: string;
   title: string;
 }) {
-  if (dataType === "application/store") {
-    return (
-      <div className="flex flex-col">
-        <Paragraph variant="base/bright" className="w-full border-b border-grid-dimmed py-2.5">
-          {title}
-        </Paragraph>
-        <LinkButton LeadingIcon={CloudArrowDownIcon} to={data} variant="tertiary/medium" download>
-          Download
-        </LinkButton>
-      </div>
-    );
-  } else {
-    return <CodeBlock rowTitle={title} code={data} maxLines={20} />;
+  switch (dataType) {
+    case "application/store": {
+      return (
+        <div className="flex flex-col">
+          <Paragraph variant="base/bright" className="w-full border-b border-grid-dimmed py-2.5">
+            {title}
+          </Paragraph>
+          <LinkButton LeadingIcon={CloudArrowDownIcon} to={data} variant="tertiary/medium" download>
+            Download
+          </LinkButton>
+        </div>
+      );
+    }
+    case "text/plain": {
+      return <CodeBlock language="markdown" rowTitle={title} code={data} maxLines={20} />;
+    }
+    default: {
+      return <CodeBlock language="json" rowTitle={title} code={data} maxLines={20} />;
+    }
   }
 }
 
diff --git a/apps/webapp/app/v3/eventRepository.server.ts b/apps/webapp/app/v3/eventRepository.server.ts
index ab50cf3ca..aa8049e10 100644
--- a/apps/webapp/app/v3/eventRepository.server.ts
+++ b/apps/webapp/app/v3/eventRepository.server.ts
@@ -10,7 +10,7 @@ import {
   SpanMessagingEvent,
   TaskEventStyle,
   correctErrorStackTrace,
-  createPackageAttributesAsJson,
+  createPacketAttributesAsJson,
   flattenAttributes,
   isExceptionSpanEvent,
   omit,
@@ -188,7 +188,7 @@ export class EventRepository {
     const event = events[0];
 
     const output = options?.attributes.output
-      ? await createPackageAttributesAsJson(
+      ? await createPacketAttributesAsJson(
           options?.attributes.output,
           options?.attributes.outputType ?? "application/json"
         )
@@ -213,8 +213,9 @@ export class EventRepository {
       style: event.style as Attributes,
       output: output,
       outputType:
-        options?.attributes.outputType === "application/store"
-          ? "application/store"
+        options?.attributes.outputType === "application/store" ||
+        options?.attributes.outputType === "text/plain"
+          ? options?.attributes.outputType
           : "application/json",
       payload: event.payload as Attributes,
       payloadType: event.payloadType,
diff --git a/apps/webapp/app/v3/services/completeAttempt.server.ts b/apps/webapp/app/v3/services/completeAttempt.server.ts
index 743ce1d2a..dd4d3d5a3 100644
--- a/apps/webapp/app/v3/services/completeAttempt.server.ts
+++ b/apps/webapp/app/v3/services/completeAttempt.server.ts
@@ -105,7 +105,7 @@ export class CompleteAttemptService extends BaseService {
       attributes: {
         isError: false,
         output:
-          completion.outputType === "application/store"
+          completion.outputType === "application/store" || completion.outputType === "text/plain"
             ? completion.output
             : completion.output
             ? (safeJsonParse(completion.output) as Attributes)
diff --git a/packages/cli-v3/src/commands/dev.tsx b/packages/cli-v3/src/commands/dev.tsx
index a21594470..5cdad32ee 100644
--- a/packages/cli-v3/src/commands/dev.tsx
+++ b/packages/cli-v3/src/commands/dev.tsx
@@ -26,7 +26,7 @@ import * as packageJson from "../../package.json";
 import { CliApiClient } from "../apiClient";
 import { CommonCommandOptions, commonOptions, wrapCommandAction } from "../cli/common.js";
 import { bundleDependenciesPlugin, workerSetupImportConfigPlugin } from "../utilities/build";
-import { chalkGrey, chalkPurple, chalkWorker } from "../utilities/cliOutput";
+import { chalkError, chalkGrey, chalkPurple, chalkTask, chalkWorker } from "../utilities/cliOutput";
 import { readConfig } from "../utilities/configFiles";
 import { readJSONFile } from "../utilities/fileSystem";
 import { printDevBanner, printStandloneInitialBanner } from "../utilities/initialBanner.js";
@@ -77,9 +77,13 @@ export async function devCommand(dir: string, options: DevCommandOptions) {
 
   if (!authorization.ok) {
     if (authorization.error === "fetch failed") {
-      logger.error("Fetch failed. Platform down?");
+      logger.log(
+        `${chalkError(
+          "X Error:"
+        )} Connecting to the server failed. Please check your internet connection or contact eric@trigger.dev for help.`
+      );
     } else {
-      logger.error("You must login first. Use `trigger.dev login` to login.");
+      logger.log(`${chalkError("X Error:")} You must login first. Use the \`login\` CLI command.`);
     }
     process.exitCode = 1;
     return;
@@ -701,13 +705,13 @@ function createDuplicateTaskIdOutputErrorMessage(
     .map((id) => {
       const tasks = taskResources.filter((task) => task.id === id);
 
-      return `id "${chalkPurple(id)}" was found in:\n${tasks
-        .map((task) => `${task.filePath} -> ${task.exportName}`)
-        .join("\n")}`;
+      return `\n\n${chalkTask(id)} was found in:${tasks
+        .map((task) => `\n${task.filePath} -> ${task.exportName}`)
+        .join("")}`;
     })
-    .join("\n\n");
+    .join("");
 
-  return `Duplicate task ids detected:\n\n${duplicateTable}\n\n`;
+  return `Duplicate ${chalkTask("task id")} detected:${duplicateTable}`;
 }
 
 function gatherProcessEnv() {
diff --git a/packages/cli-v3/src/workers/dev/backgroundWorker.ts b/packages/cli-v3/src/workers/dev/backgroundWorker.ts
index d5859679e..16fb006f3 100644
--- a/packages/cli-v3/src/workers/dev/backgroundWorker.ts
+++ b/packages/cli-v3/src/workers/dev/backgroundWorker.ts
@@ -18,16 +18,11 @@ import {
   formatDurationMilliseconds,
   workerToChildMessages,
 } from "@trigger.dev/core/v3";
-import chalk from "chalk";
 import dotenv from "dotenv";
 import { Evt } from "evt";
 import { ChildProcess, fork } from "node:child_process";
 import { dirname, resolve } from "node:path";
 import terminalLink from "terminal-link";
-import { safeDeleteFileSync } from "../../utilities/fileSystem.js";
-import { installPackages } from "../../utilities/installPackages.js";
-import { logger } from "../../utilities/logger.js";
-import { UncaughtExceptionError } from "../common/errors.js";
 import {
   chalkError,
   chalkGrey,
@@ -39,6 +34,10 @@ import {
   chalkWorker,
   prettyPrintDate,
 } from "../../utilities/cliOutput.js";
+import { safeDeleteFileSync } from "../../utilities/fileSystem.js";
+import { installPackages } from "../../utilities/installPackages.js";
+import { logger } from "../../utilities/logger.js";
+import { UncaughtExceptionError } from "../common/errors.js";
 
 export type CurrentWorkers = BackgroundWorkerCoordinator["currentWorkers"];
 export class BackgroundWorkerCoordinator {
diff --git a/packages/core/src/v3/index.ts b/packages/core/src/v3/index.ts
index d3696950a..7c1871924 100644
--- a/packages/core/src/v3/index.ts
+++ b/packages/core/src/v3/index.ts
@@ -64,7 +64,7 @@ export {
   stringifyIO,
   prettyPrintPacket,
   createPacketAttributes,
-  createPackageAttributesAsJson,
+  createPacketAttributesAsJson,
   conditionallyExportPacket,
   conditionallyImportPacket,
   packetRequiresOffloading,
diff --git a/packages/core/src/v3/utils/ioSerialization.ts b/packages/core/src/v3/utils/ioSerialization.ts
index 4aa25d0f1..e6215551f 100644
--- a/packages/core/src/v3/utils/ioSerialization.ts
+++ b/packages/core/src/v3/utils/ioSerialization.ts
@@ -42,9 +42,14 @@ export async function stringifyIO(value: any): Promise<IOPacket> {
     return { data: value, dataType: "text/plain" };
   }
 
-  const { stringify } = await loadSuperJSON();
+  try {
+    const { stringify } = await loadSuperJSON();
+    const data = stringify(value);
 
-  return { data: stringify(value), dataType: "application/super+json" };
+    return { data, dataType: "application/super+json" };
+  } catch {
+    return { dataType: "application/json" };
+  }
 }
 
 export async function conditionallyExportPacket(
@@ -193,9 +198,9 @@ export async function createPacketAttributes(
   packet: IOPacket,
   dataKey: string,
   dataTypeKey: string
-): Promise<Attributes> {
+): Promise<Attributes | undefined> {
   if (!packet.data) {
-    return {};
+    return;
   }
 
   switch (packet.dataType) {
@@ -207,13 +212,22 @@ export async function createPacketAttributes(
     case "application/super+json":
       const { parse } = await loadSuperJSON();
 
-      const parsed = parse(packet.data) as any;
-      const jsonified = JSON.parse(JSON.stringify(parsed, safeReplacer));
+      if (typeof packet.data === "undefined" || packet.data === null) {
+        return;
+      }
+
+      try {
+        const parsed = parse(packet.data) as any;
+        const jsonified = JSON.parse(JSON.stringify(parsed, safeReplacer));
+
+        return {
+          ...flattenAttributes(jsonified, dataKey),
+          [dataTypeKey]: "application/json",
+        };
+      } catch {
+        return;
+      }
 
-      return {
-        ...flattenAttributes(jsonified, dataKey),
-        [dataTypeKey]: "application/json",
-      };
     case "application/store":
       return {
         [dataKey]: packet.data,
@@ -221,15 +235,15 @@ export async function createPacketAttributes(
       };
     case "text/plain":
       return {
-        [SemanticInternalAttributes.OUTPUT]: packet.data,
-        [SemanticInternalAttributes.OUTPUT_TYPE]: packet.dataType,
+        [dataKey]: packet.data,
+        [dataTypeKey]: packet.dataType,
       };
     default:
-      return {};
+      return;
   }
 }
 
-export async function createPackageAttributesAsJson(
+export async function createPacketAttributesAsJson(
   data: any,
   dataType: string
 ): Promise<Attributes> {
@@ -250,7 +264,7 @@ export async function createPackageAttributesAsJson(
       const { deserialize } = await loadSuperJSON();
 
       const deserialized = deserialize(data) as any;
-      const jsonify = JSON.parse(JSON.stringify(deserialized, safeReplacer));
+      const jsonify = safeJsonParse(JSON.stringify(deserialized, safeReplacer));
 
       return imposeAttributeLimits(flattenAttributes(jsonify, undefined));
     case "application/store":
@@ -326,3 +340,11 @@ function getPacketExtension(outputType: string): string {
 async function loadSuperJSON(): Promise<typeof import("superjson")> {
   return await import("superjson");
 }
+
+function safeJsonParse(value: string): any {
+  try {
+    return JSON.parse(value);
+  } catch {
+    return;
+  }
+}
diff --git a/packages/core/src/v3/workers/taskExecutor.ts b/packages/core/src/v3/workers/taskExecutor.ts
index 2e5d44420..fe709caa9 100644
--- a/packages/core/src/v3/workers/taskExecutor.ts
+++ b/packages/core/src/v3/workers/taskExecutor.ts
@@ -104,14 +104,16 @@ export class TaskExecutor {
                     this._tracer
                   );
 
-                  span.setAttributes(
-                    await createPacketAttributes(
-                      finalOutput,
-                      SemanticInternalAttributes.OUTPUT,
-                      SemanticInternalAttributes.OUTPUT_TYPE
-                    )
+                  const attributes = await createPacketAttributes(
+                    finalOutput,
+                    SemanticInternalAttributes.OUTPUT,
+                    SemanticInternalAttributes.OUTPUT_TYPE
                   );
 
+                  if (attributes) {
+                    span.setAttributes(attributes);
+                  }
+
                   return {
                     ok: true,
                     id: execution.attempt.id,
diff --git a/references/v3-catalog/src/trigger/superjson.ts b/references/v3-catalog/src/trigger/superjson.ts
index 6e75e8a69..2059986d2 100644
--- a/references/v3-catalog/src/trigger/superjson.ts
+++ b/references/v3-catalog/src/trigger/superjson.ts
@@ -17,9 +17,7 @@ export const superParentTask = task({
     logger.log(`typeof result.error = ${typeof result.error}`);
     logger.log(`typeof result.url = ${typeof result.url}`);
 
-    return {
-      result,
-    };
+    return "## super-parent-task completed";
   },
 });
 
@@ -120,6 +118,35 @@ export const superHugeOutputTask = task({
   },
 });
 
+export const superStringTask = task({
+  id: "super-string-parent-task",
+  run: async () => {
+    const result = await superStringChildTask.triggerAndWait({
+      payload: {
+        foo: "bar",
+      },
+    });
+
+    return result;
+  },
+});
+
+export const superStringChildTask = task({
+  id: "super-string-child-task",
+  run: async () => {
+    return "## super-string-child-task completed";
+  },
+});
+
+export const superBadOutputTask = task({
+  id: "super-bad-output-task",
+  run: async () => {
+    // Returning something that cannot be serialized
+
+    return () => {};
+  },
+});
+
 function createLargeObject(size: number, length: number) {
   return Array.from({ length }, (_, i) => [i.toString(), i.toString().padStart(size, "0")]).reduce(
     (acc, [key, value]) => {