# Cursor AI Fails to Save Simple Code Modifications - Persistent Errors Even with Direct Copy-Paste

**URL:** <https://forum.cursor.com/t/cursor-ai-fails-to-save-simple-code-modifications-persistent-errors-even-with-direct-copy-paste/75637>\
**Category:** Bug Reports\
**Created:** [April 6, 2025, 7:09am UTC](https://forum.cursor.com/t/cursor-ai-fails-to-save-simple-code-modifications-persistent-errors-even-with-direct-copy-paste/75637 "2025-04-06T07:09:10Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![fangpochen](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/fangpochen/32/44541_2.png) [@fangpochen](https://forum.cursor.com/u/fangpochen)\
**Post date:** [April 6, 2025, 7:09am UTC](https://forum.cursor.com/t/cursor-ai-fails-to-save-simple-code-modifications-persistent-errors-even-with-direct-copy-paste/75637/1 "2025-04-06T07:09:10Z")

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![image](https://us1.discourse-cdn.com/cursor1/original/3X/f/1/f11c1ff4d121ed9c46903470338f1fa2ac25e30a.jpeg)  
Hi Cursor Team & Community,

I’m experiencing a significant decline in Cursor’s reliability over the past week, specifically when handling basic code modifications. Even for trivial tasks like copying existing code and adjusting save formats/logic, Cursor consistently throws unexpected errors. Here are the details:

### **Issue Description**

1. **Task** : Directly copying functional code (e.g., JSON/CSV processing scripts) and modifying I/O logic.
2. **Expected Behavior** : Successful save/execution with adjusted paths/formats.
3. **Actual Behavior** :

- Random syntax errors in _previously working code_ after minor changes
- False “undefined variable” warnings
- Crash when saving files (Error: `ERR_IPC_CHANNEL_CLOSED`)
- AI suggestions becoming nonsensical (e.g., proposing `non-existent_module.xyz()`)

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**Author:** ![system](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/system/32/99069_2.png) [@system](https://forum.cursor.com/u/system)\
**Post date:** [May 6, 2025, 7:09am UTC](https://forum.cursor.com/t/cursor-ai-fails-to-save-simple-code-modifications-persistent-errors-even-with-direct-copy-paste/75637/2 "2025-05-06T07:09:59Z")

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