Hi Traoter,

As mentioned in the error message, you should try doing a complete download.

Kind regards
Stefan

Hello Traoter

you can also try to delete them temp data of the Project:

https://support.industry.siemens.com/cs/de/en/view/109778709

does it also appear if you want to simulate a new test project with a new panel?

Bye Murof

Hello 

do you use the windows user for TIA engineering that you have installed TIA with?

Its because of the access rights and if you are in the Siemens TIA Engineer usergoup?

Check also if you have writing rights to the folder where the project is located. try to use another local folder where you have rights

Bye Murof