I have the same issue. I've tried to redownload and transfer update into original file, replaced what needed. Nothing seems to work
same i have try all the fix i can think off and no of them work. and yes install base game and the update like you
We (the Discord mod team) have identified the issue, and CNG should be fixing it soon. In the meantime, if you go to the patreon you should be able to download the full 1.17 version, which doesn't have this problem.
The fixed update is up.