diff --git a/.changeset/fix-mcp-connection-errors.md b/.changeset/fix-mcp-connection-errors.md
new file mode 100644
index 00000000..4f99fe6f
--- /dev/null
+++ b/.changeset/fix-mcp-connection-errors.md
@@ -0,0 +1,5 @@
+---
+"task-master-ai": patch
+---
+
+Fix MCP connection errors caused by deprecated generateTaskFiles calls. Resolves "Cannot read properties of null (reading 'toString')" errors when using MCP tools for task management operations.
\ No newline at end of file
diff --git a/scripts/modules/task-manager/add-subtask.js b/scripts/modules/task-manager/add-subtask.js
index ad03084c..3724cef7 100644
--- a/scripts/modules/task-manager/add-subtask.js
+++ b/scripts/modules/task-manager/add-subtask.js
@@ -1,8 +1,5 @@
-import path from 'path';
-
 import { log, readJSON, writeJSON, getCurrentTag } from '../utils.js';
 import { isTaskDependentOn } from '../task-manager.js';
-import generateTaskFiles from './generate-task-files.js';
 
 /**
  * Add a subtask to a parent task
@@ -142,11 +139,7 @@ async function addSubtask(
 		// Write the updated tasks back to the file with proper context
 		writeJSON(tasksPath, data, projectRoot, tag);
 
-		// Generate task files if requested
-		if (generateFiles) {
-			log('info', 'Regenerating task files...');
-			await generateTaskFiles(tasksPath, path.dirname(tasksPath), context);
-		}
+		// Note: Task file generation is no longer supported and has been removed
 
 		return newSubtask;
 	} catch (error) {
diff --git a/scripts/modules/task-manager/move-task.js b/scripts/modules/task-manager/move-task.js
index a9377503..20cedec5 100644
--- a/scripts/modules/task-manager/move-task.js
+++ b/scripts/modules/task-manager/move-task.js
@@ -6,7 +6,6 @@ import {
 	setTasksForTag,
 	traverseDependencies
 } from '../utils.js';
-import generateTaskFiles from './generate-task-files.js';
 import {
 	findCrossTagDependencies,
 	getDependentTaskIds,
@@ -142,13 +141,7 @@ async function moveTask(
 			results.push(result);
 		}
 
-		// Generate files once at the end if requested
-		if (generateFiles) {
-			await generateTaskFiles(tasksPath, path.dirname(tasksPath), {
-				tag: tag,
-				projectRoot: projectRoot
-			});
-		}
+		// Note: Task file generation is no longer supported and has been removed
 
 		return {
 			message: `Successfully moved ${sourceIds.length} tasks/subtasks`,
@@ -209,12 +202,7 @@ async function moveTask(
 	// The writeJSON function will filter out _rawTaggedData automatically
 	writeJSON(tasksPath, rawData, options.projectRoot, tag);
 
-	if (generateFiles) {
-		await generateTaskFiles(tasksPath, path.dirname(tasksPath), {
-			tag: tag,
-			projectRoot: projectRoot
-		});
-	}
+	// Note: Task file generation is no longer supported and has been removed
 
 	return result;
 }
diff --git a/scripts/modules/task-manager/remove-subtask.js b/scripts/modules/task-manager/remove-subtask.js
index 5f096c05..7677f32c 100644
--- a/scripts/modules/task-manager/remove-subtask.js
+++ b/scripts/modules/task-manager/remove-subtask.js
@@ -1,6 +1,4 @@
-import path from 'path';
 import { log, readJSON, writeJSON } from '../utils.js';
-import generateTaskFiles from './generate-task-files.js';
 
 /**
  * Remove a subtask from its parent task
@@ -108,11 +106,7 @@ async function removeSubtask(
 		// Write the updated tasks back to the file with proper context
 		writeJSON(tasksPath, data, projectRoot, tag);
 
-		// Generate task files if requested
-		if (generateFiles) {
-			log('info', 'Regenerating task files...');
-			await generateTaskFiles(tasksPath, path.dirname(tasksPath), context);
-		}
+		// Note: Task file generation is no longer supported and has been removed
 
 		return convertedTask;
 	} catch (error) {
diff --git a/tests/unit/scripts/modules/task-manager/add-subtask.test.js b/tests/unit/scripts/modules/task-manager/add-subtask.test.js
index eeaf6ef7..6fc87a94 100644
--- a/tests/unit/scripts/modules/task-manager/add-subtask.test.js
+++ b/tests/unit/scripts/modules/task-manager/add-subtask.test.js
@@ -94,7 +94,6 @@ describe('addSubtask function', () => {
 		const parentTask = writeCallArgs.tasks.find((t) => t.id === 1);
 		expect(parentTask.subtasks).toHaveLength(1);
 		expect(parentTask.subtasks[0].title).toBe('New Subtask');
-		expect(mockGenerateTaskFiles).toHaveBeenCalled();
 	});
 
 	test('should convert an existing task to a subtask', async () => {
diff --git a/tests/unit/scripts/modules/task-manager/move-task.test.js b/tests/unit/scripts/modules/task-manager/move-task.test.js
index a3df27fd..aadcd6f5 100644
--- a/tests/unit/scripts/modules/task-manager/move-task.test.js
+++ b/tests/unit/scripts/modules/task-manager/move-task.test.js
@@ -88,11 +88,6 @@ describe('moveTask (unit)', () => {
 		).rejects.toThrow(/Number of source IDs/);
 	});
 
-	test('batch move calls generateTaskFiles once when flag true', async () => {
-		await moveTask('tasks.json', '1,2', '3,4', true, { tag: 'master' });
-		expect(generateTaskFiles).toHaveBeenCalledTimes(1);
-	});
-
 	test('error when tag invalid', async () => {
 		await expect(
 			moveTask('tasks.json', '1', '2', false, { tag: 'ghost' })