Game stuck at Klei logo on launch

Can you drop the output_log?

https://support.klei.com/hc/en-us/articles/360029555392-Logs-and-Useful-Information-for-Bug-Reports

Quote

OUTPUT LOG

In order to find your game's output_log.txt file: 
- Open up your Windows Explorer, and on the address bar (to the left of the search bar) copy and paste the following text and press Enter:
%appdata%\..\locallow\klei\Oxygen Not Included
 
- This will take you to the Oxygen Not Included log folder where you will find the output_log.txt file.

Edit: Never mind, you're missing a .dll file, try verifying file integrity again because you're missing "ModLoader.dll"

Edited February 4, 2020 by watermelen671

The ModLoader message is always there, but the log does seem to end abruptly. Did you grab the log immediately after it got stuck?

I left it running (beach ball cursor and unresponsive app) a couple of minutes and grabbed the log while it was in the background. Then eventually force-quit the game. But I think I did that after getting the log in this instance.

As for the mod log entries I first encountered the problem when I had some mods installed, then the log contained messages about loading those mods (successfully as I understood it). But then I followed the instructions above and removed all mods and the preference file and after that the problem presisted, but the log now doesn't contain much and seems to end after starting Unity.