So to speak, never ever rename files and let them stay in that folder. REmove them from Game folders totally so the check of the launcher stays clean of error mismatch file message.
Larian has updated their
support article for this issue, and it lists exactly the same file as an example:
... such as a dxdiag.xml file in the bin folder
These will be corrected in a hotfix.
Pretty daft way to check for installation integrity, if you ask me.
