try

src/lib/db/trainerScanning.ts

@@ -12,9 +12,21 @@ export async function initializeTrainerScanProgress(imagePaths: string[]): Promi
     // Extract trainer name and image index from path
     // Format: "trainer_images/001_Willow_Snap/image_001.jpg"
     const pathParts = imagePath.split('/');
+    if (pathParts.length < 3) {
+      console.warn(`Skipping invalid path format: ${imagePath}`);
+      continue;
+    }
+    
     const trainerName = pathParts[1]; // "001_Willow_Snap"
     const imageFile = pathParts[2]; // "image_001.jpg"
-    const imageIndex = parseInt(imageFile.match(/image_(\d+)\.jpg/)?.[1] || '1');
+    
+    if (!trainerName || !imageFile) {
+      console.warn(`Skipping path with missing parts: ${imagePath}`);
+      continue;
+    }
+    
+    const imageMatch = imageFile.match(/image_(\d+)\.jpg/);
+    const imageIndex = imageMatch ? parseInt(imageMatch[1]) : 1;
     
     const remoteUrl = `https://huggingface.co/datasets/Fraser/piclets/resolve/main/${imagePath}`;
     

src/lib/services/trainerScanService.ts

@@ -77,8 +77,23 @@ export class TrainerScanService {
   async initializeFromFile(): Promise<void> {
     try {
       const response = await fetch('/trainer_image_paths.txt');
+      if (!response.ok) {
+        throw new Error(`Failed to fetch trainer_image_paths.txt: ${response.statusText}`);
+      }
+      
       const content = await response.text();
-      const imagePaths = content.trim().split('\n').filter(path => path.trim());
+      if (!content) {
+        throw new Error('trainer_image_paths.txt is empty');
+      }
+      
+      const imagePaths = content.trim().split('\n')
+        .map(path => typeof path === 'string' ? path.trim() : '')
+        .filter(path => path.length > 0);
+      console.log(`Loaded ${imagePaths.length} trainer image paths`);
+      
+      if (imagePaths.length === 0) {
+        throw new Error('No valid image paths found in trainer_image_paths.txt');
+      }
       
       await initializeTrainerScanProgress(imagePaths);
       this.notifyStateChange(await this.getCurrentState());