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We have received reports of an issue where the game crashes and then the error message "LowLevelFatalError|File:Unknown) [Line: 729]" is displayed, making it impossible to launch the game.
The reason for the error message is that the save data may have been corrupted when the game crashed and the game cannot be started.
We apologize for the inconvenience, but we will investigate and repair your save data, so please send the save data folder to the support form using the following procedure.
*If you contacted us by April 30, 2025 regarding corrupted save data, we apologize for the inconvenience, but please contact us again with your save data.
We will investigate the save data, and if we are able to resolve the issue, we will return the repaired save data to you.
Check the save data folder
On the desktop screen, hold down the "Windows" key and then press the "R" key on your keyboard.
A window titled "RUN" will appear. Enter "%localappdata%/DollsNest" in the search window and select "OK".
This will open the save data folder. The opened "Saved" folder is your save data, so please compress the folder using any application and send it to the support form below. *When repairing your save data, the "number of Cycles" information will also be corrected, so please let us know the number of Cycles in your save data as well.
Please send Save Data here
Steam･Console Game Support Form
Attention
Depending on how corrupted the save data is, it may not be possible to repair it.
We cannot assist with cases where save data has been intentionally corrupted or damaged by phenomena unrelated to the game, such as power outages.
When repairing save data, the following information may not be restored. "SAVE DATA NAME" "PLAY TIME" "CYCLES"
Please note that it may take some time to investigate and repair the save data.
If you are unable to repair your save data, or if you do not wish to repair it and would like to be able to play the game again, please see "About deleting save data" below.
About deleting save data
If the save data is corrupted, an error will occur when starting the game or loading the save data.
We apologize for any inconvenience, but if corrupted save data cannot be repaired, you will need to delete the save data and play the game in its initial state.
Please follow the steps below to learn how to delete your save data.
Turn off the Steam Cloud feature If the Steam Cloud function is ON, even if you delete corrupted save data,the corrupted save data stored in the cloud will be re-downloaded. Before deleting save data, turn off saving save data to Steam Cloud. ・Open the "Library" in the Steam app, right-click on "Dolls Nest" and select "Properties". ・Once the properties are open, go to the "General" menu and change the "Keep game's saves in the Steam Cloud for Dolls Nest" option to "OFF." *The default setting is probably ON (blue). This will turn off Steam Cloud save storage.
Delete save data Please open the local save data folder using the following steps. ・On the desktop screen, hold down the "Windows" key and then press the "R" key on your keyboard. ・A window titled "RUN" will appear. Enter "%localappdata%/DollsNest" in the search window and select "OK". This will open the save data folder. The "Saved" folder in the opened folder will be your save data. The save data will be invalidated if you delete it or rename it to a different file name such as "Saved_00".
Start the game This completes the deletion of your save data. Launch "Dolls Nest" from the Steam app and check if the game starts without any errors. If you are able to start the game normally, you can safely turn the "Keep game's saves in the Steam Cloud for Dolls Nest" option back to "ON".
We sincerely apologize for any inconvenience caused by our products.
We look forward to your continued support of Nitroplus.
Nitroplus Co., Ltd.