Error occurred while saving

Hello,

 

I have an saving Issue with my Draftsight 2025 SP1.

One of my DWG files, i´m working with right now, has the issue that it dont let me save my work on it.
It occures only on this DWG file only. Every other file i m able to save my work.

Normaly ich would just scap it and start from scratch with a new file, but this is a kind of a living file, where we have to work on constantly. 
When i ask my co worker to work with this file, he is able do save his work.

He works with Draftsight 2023 SP1. 

I hope you can help me with this issue, so i dont have to rebuild this file, which would be alot of work.

 

Greetings Patrick