Game won't start

[serezha]

Originally Posted by Cobarus

Belay that request. I deleted the GameData.dat file and now my game fully launches and works! Issue resolved.

For anyone that is experiencing the black screen on launch, see if you have a GameData.dat file in the following folder and then delete or rename it:

%USERPROFILE%\AppData\LocalLow\Iron Wolf Studio\Destroyer The U-Boat Hunter

That file had a date stamp of March, which I can't guarantee that it's when I first installed and played the demo, but it feels like it was around that timeframe. It's possible the file was left over from the demo. Who knows.

I don't have a GameData.dat file in this folder. And I didn't have a demo version of the game. In this folder I have three files:
player.log
Player-prev.log
steam_autocloud.vdf

Black screen on startup persists

[Cobarus]

Originally Posted by serezha

I don't have a GameData.dat file in this folder. And I didn't have a demo version of the game. In this folder I have three files:
player.log
Player-prev.log
steam_autocloud.vdf

Black screen on startup persists

The Player.log file usually contains clues as to what's causing the game to get stuck at the black screen after launch. If you don't mind sharing your file here, I can take a look at it and see if there's anything I can ascertain from it in hopes to find a solution to resolve your case.

[serezha]

Originally Posted by Cobarus

The Player.log file usually contains clues as to what's causing the game to get stuck at the black screen after launch. If you don't mind sharing your file here, I can take a look at it and see if there's anything I can ascertain from it in hopes to find a solution to resolve your case.

I copied the link to my Player.log file

https://drive.google.com/file/d/1fc3...ew?usp=sharing

[Cobarus]

Originally Posted by serezha

I copied the link to my Player.log file

https://drive.google.com/file/d/1fc3...ew?usp=sharing

Thank you. I have looked through the LOG file and it appears your case is a known issue between the Unity game engine and DirectX 11 on Windows 7 (and Windows 8.1). In the other cases I've come across when searching this issue, the game developers have needed to fix it on their end.

There are two things you can try on your end to see if they'll make a difference, however the first one is a temporary workaround that might get the game running, but could exhibit performance or gameplay issues.


Run the game with DirectX 10

See my attached screenshot for visual depiction of the following instructions.

1. Open the Steam application to the Destroyer The U-Boat Hunter main game page.
2. Click the gear icon on the right-hand side, located under the game's picture banner, and click Properties.
3. In the Launch Options section, either type in or copy/paste the following line: -force-feature-level-10-0
4. Close out of the Properties dialog and launch the game.

You can always switch back to DirectX 11 by following steps 1-3 again, and removing/backspacing the Launch Options line item.


Disable the Steam Overlay

On some occasions, the Steam Overlay can cause rendering issues on game launch. You can try disabling it, if it isn't already, to see if it makes a difference.

How-to—

Follow the above steps 1-2 to reach the game Properties dialog, and then uncheck the boxes next to both:

• Enable the Steam Overlay while in-game
• Use Desktop Game Theatre while SteamVR is active

Close the Properties dialog and launch the game.

[serezha]

Originally Posted by Cobarus

Close the Properties dialog and launch the game.

Thanks for the help. But all my attempts to launch the damn game have failed.

[Onkel Neal]

Windows 7, end of life in 2020. Sorry, mate.

[schlechter pfennig]

If you are using Nvidia you might want to try this:

1: Go to Nvidia control panel
2: Go to "Manage 3D settings
3: Go to "Program Settings" tab
4: Find Destroyer: The U-Boat Hunter (you may need to add the program to the list with the "Add" button)
5: Find the "vertical synchroimpulse" line
6: Turn it off (or Vertical sync setting to "use the 3D application setting")
7: Apply changes