any resoltion for this case? I have the same problem
Hi Diogo, can you give more information about the problem you're having? Does the error happens with all extensions or just one?
Try clicking on the "Update Source Code" button and republish.
What happens when you try to edit the C# source code (button to the right of "Update Source Code")?
If none of this helps, you could post a sample extension to see if it's possible to reproduce it.
There was another ticket about the same error, that one was solved by not using special characters, but only ASCI in the path where you save your solution.
Can you try to change the folder where you store your solution to c:\local\outsystems\?