diff --git a/chainforge/react-server/src/App.tsx b/chainforge/react-server/src/App.tsx
index f7f446e..d798431 100644
--- a/chainforge/react-server/src/App.tsx
+++ b/chainforge/react-server/src/App.tsx
@@ -37,7 +37,7 @@ import CodeEvaluatorNode from "./CodeEvaluatorNode";
 import VisNode from "./VisNode";
 import InspectNode from "./InspectorNode";
 import ScriptNode from "./ScriptNode";
-import { AlertModalProvider, AlertModalContext } from "./AlertModal";
+import { AlertModalContext } from "./AlertModal";
 import ItemsNode from "./ItemsNode";
 import TabularDataNode from "./TabularDataNode";
 import JoinNode from "./JoinNode";
@@ -898,7 +898,7 @@ const App = () => {
     );
   } else
     return (
-      <AlertModalProvider>
+      <div>
         <GlobalSettingsModal ref={settingsModal} />
         <LoadingOverlay visible={isLoading} overlayBlur={1} />
         <ExampleFlowsModal
@@ -946,6 +946,10 @@ const App = () => {
               snapToGrid={true}
               snapGrid={snapGrid}
               onInit={onInit}
+              onError={(err) => {
+                // Suppress ReactFlow warnings spamming the console.
+                // console.log(err);
+              }}
             >
               <Background color="#999" gap={16} />
               <Controls showZoom={true} />
@@ -1223,7 +1227,7 @@ const App = () => {
             Send us feedback
           </a>
         </div>
-      </AlertModalProvider>
+      </div>
     );
 };
 
diff --git a/chainforge/react-server/src/InspectorNode.tsx b/chainforge/react-server/src/InspectorNode.tsx
index b6dcb14..e3c4a08 100644
--- a/chainforge/react-server/src/InspectorNode.tsx
+++ b/chainforge/react-server/src/InspectorNode.tsx
@@ -1,4 +1,4 @@
-import React, { useState, useEffect } from "react";
+import React, { useState, useEffect, useContext } from "react";
 import { Handle, Position } from "reactflow";
 import useStore from "./store";
 import BaseNode from "./BaseNode";
@@ -6,6 +6,7 @@ import NodeLabel from "./NodeLabelComponent";
 import LLMResponseInspector, { exportToExcel } from "./LLMResponseInspector";
 import { grabResponses } from "./backend/backend";
 import { LLMResponse } from "./backend/typing";
+import { AlertModalContext } from "./AlertModal";
 
 export interface InspectorNodeProps {
   data: {
@@ -26,6 +27,7 @@ const InspectorNode: React.FC<InspectorNodeProps> = ({ data, id }) => {
   const [pastInputs, setPastInputs] = useState<string>("");
   const inputEdgesForNode = useStore((state) => state.inputEdgesForNode);
   const setDataPropsForNode = useStore((state) => state.setDataPropsForNode);
+  const showAlert = useContext(AlertModalContext);
 
   const handleOnConnect = () => {
     // For some reason, 'on connect' is called twice upon connection.
@@ -74,7 +76,13 @@ const InspectorNode: React.FC<InspectorNodeProps> = ({ data, id }) => {
           <button
             className="custom-button"
             key="export-data"
-            onClick={() => exportToExcel(jsonResponses ?? [])}
+            onClick={() => {
+              try {
+                exportToExcel(jsonResponses ?? []);
+              } catch (e) {
+                showAlert && showAlert(e as Error);
+              }
+            }}
           >
             Export data
           </button>,
diff --git a/chainforge/react-server/src/LLMResponseInspector.tsx b/chainforge/react-server/src/LLMResponseInspector.tsx
index e87fe53..da05760 100644
--- a/chainforge/react-server/src/LLMResponseInspector.tsx
+++ b/chainforge/react-server/src/LLMResponseInspector.tsx
@@ -38,7 +38,12 @@ import {
   genResponseTextsDisplay,
 } from "./ResponseBoxes";
 import { getLabelForResponse } from "./ResponseRatingToolbar";
-import { Dict, LLMResponse, LLMResponseData } from "./backend/typing";
+import {
+  Dict,
+  LLMResponse,
+  LLMResponseData,
+  isImageResponseData,
+} from "./backend/typing";
 
 // Helper funcs
 const getLLMName = (resp_obj: LLMResponse) =>
@@ -55,8 +60,8 @@ function getIndicesOfSubstringMatches(
     escapeRegExp(substr),
     "g" + (caseSensitive ? "" : "i"),
   );
-  let result;
-  const indices = [];
+  let result: RegExpExecArray | null;
+  const indices: number[] = [];
   while ((result = regex.exec(s))) indices.push(result.index);
   return indices;
 }
@@ -71,9 +76,9 @@ function splitAndIncludeDelimiter(
   if (indices.length === 0) return [s];
 
   const len_sub = substr.length;
-  const results = [];
+  const results: string[] = [];
   let prev_idx = 0;
-  indices.forEach((idx) => {
+  indices.forEach((idx: number) => {
     const pre_delim = s.substring(prev_idx, idx);
     const delim = s.substring(idx, idx + len_sub);
     results.push(pre_delim);
@@ -119,10 +124,21 @@ export const exportToExcel = (
     !jsonResponses ||
     (Array.isArray(jsonResponses) && jsonResponses.length === 0)
   ) {
-    console.warn(
+    throw new Error(
       "No responses to export. Try connecting the inspector node to a prompt node or evaluator node.",
     );
-    return;
+  }
+
+  // Check format of responses
+  // TODO: Support export of images in Excel sheets
+  if (
+    jsonResponses.some(
+      (r) => r.responses.length > 0 && isImageResponseData(r.responses[0]),
+    )
+  ) {
+    throw new Error(
+      "Images cannot be exported to Excel at this time. If you need this feature and you are a developer, please consider submitting a PR to our GitHub repository.",
+    );
   }
 
   // We can construct the data as an array of JSON dicts, with keys as header names:
diff --git a/chainforge/react-server/src/LLMResponseInspectorModal.tsx b/chainforge/react-server/src/LLMResponseInspectorModal.tsx
index 9b6dbfb..754efa6 100644
--- a/chainforge/react-server/src/LLMResponseInspectorModal.tsx
+++ b/chainforge/react-server/src/LLMResponseInspectorModal.tsx
@@ -2,11 +2,18 @@
  * A fullscreen version of the Inspect node that
  * appears in a Mantine modal pop-up which takes up much of the screen.
  */
-import React, { forwardRef, useImperativeHandle, lazy, Suspense } from "react";
+import React, {
+  forwardRef,
+  useImperativeHandle,
+  lazy,
+  Suspense,
+  useContext,
+} from "react";
 import { LoadingOverlay, Modal } from "@mantine/core";
 import { useDisclosure } from "@mantine/hooks";
 import { exportToExcel } from "./LLMResponseInspector";
 import { LLMResponse } from "./backend/typing";
+import { AlertModalContext } from "./AlertModal";
 
 // Lazy load the inspector view
 const LLMResponseInspector = lazy(() => import("./LLMResponseInspector"));
@@ -25,6 +32,7 @@ const LLMResponseInspectorModal = forwardRef<
 >(function LLMResponseInspectorModal(props, ref) {
   // const inspectorRef = useRef(null);
   const [opened, { open, close }] = useDisclosure(false);
+  const showAlert = useContext(AlertModalContext);
   // const [openedOnce, setOpenedOnce] = useState(false);
 
   // This gives the parent access to triggering the modal
@@ -50,7 +58,14 @@ const LLMResponseInspectorModal = forwardRef<
           <button
             className="custom-button"
             style={{ marginTop: "auto", marginRight: "14px", float: "right" }}
-            onClick={() => exportToExcel(props.jsonResponses)}
+            onClick={() => {
+              try {
+                exportToExcel(props.jsonResponses);
+              } catch (e) {
+                close();
+                showAlert && showAlert(e as Error);
+              }
+            }}
           >
             Export data to Excel
           </button>
diff --git a/chainforge/react-server/src/index.js b/chainforge/react-server/src/index.js
index 56ac0a1..7f65980 100644
--- a/chainforge/react-server/src/index.js
+++ b/chainforge/react-server/src/index.js
@@ -4,13 +4,16 @@ import "./index.css";
 import App from "./App";
 import reportWebVitals from "./reportWebVitals";
 import { ContextMenuProvider } from "mantine-contextmenu";
+import { AlertModalProvider } from "./AlertModal";
 
 const root = ReactDOM.createRoot(document.getElementById("root"));
 root.render(
   <React.StrictMode>
-    <ContextMenuProvider>
-      <App />
-    </ContextMenuProvider>
+    <AlertModalProvider>
+      <ContextMenuProvider>
+        <App />
+      </ContextMenuProvider>
+    </AlertModalProvider>
   </React.StrictMode>,
 );