diff --git a/App.tsx b/App.tsx
index 77f9531..2574efa 100644
--- a/App.tsx
+++ b/App.tsx
@@ -201,9 +201,9 @@ const App: React.FC = () => {
       await saveAdsData(data);
       console.log("Ads loaded:", data.length, "records from", file.name);
       setIsDataModalOpen(false);
-    } catch (error) {
+    } catch (error: any) {
       console.error("Failed to parse Ads file", error);
-      alert("Error parsing Ads file. Please check the format.");
+      alert(`Error parsing Ads file: ${error.message || 'Unknown error'}. Please check the format.`);
     } finally {
       setSyncing(false);
     }
diff --git a/services/dataProcessor.ts b/services/dataProcessor.ts
index 28c1f4c..b321fd9 100644
--- a/services/dataProcessor.ts
+++ b/services/dataProcessor.ts
@@ -357,7 +357,7 @@ export const processAdsExcel = async (fileOrBuffer: File | ArrayBuffer): Promise
         const arrayBuffer = fileOrBuffer instanceof File
             ? await fileOrBuffer.arrayBuffer()
             : fileOrBuffer;
-        const workbook = XLSX.read(arrayBuffer);
+        const workbook = XLSX.read(arrayBuffer, { type: 'array' });
         const allData: AdsRecord[] = [];
 
         // Process ALL sheets (e.g., "2025", "2026")
diff --git a/services/storage.ts b/services/storage.ts
index 6ed6b9a..b45e5ee 100644
--- a/services/storage.ts
+++ b/services/storage.ts
@@ -4,7 +4,7 @@ import { SalesRecord } from '../types';
 const DB_NAME = 'CrazeAnalytixDB';
 const STORE_NAME = 'salesData';
 const ADS_STORE_NAME = 'adsData';
-const DB_VERSION = 1;
+const DB_VERSION = 2;
 // Increment this when data processing logic changes (e.g., field mapping changes)
 // This forces cache invalidation and re-processing of CSV data
 const DATA_SCHEMA_VERSION = 2; // Updated for LICENSE column mapping