There Was An Unhandled Exception Trying To Save Your Rom To Disk Guide

Antivirus software or OneDrive syncing is locking the file while the emulator is trying to access it. Step-by-Step Solutions 1. Run as Administrator

(a game already modified by someone else) often triggers this, as the internal data offsets no longer match what the randomizer expects. Seed or Config Errors

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If you continue to experience issues with the Universal Randomizer, several excellent alternatives are available for customizing your Pokémon ROMs, each offering unique features:

The application lacks write access to the folder. Disk Space: The storage device is full or near capacity. Antivirus software or OneDrive syncing is locking the

Fixing the "There Was an Unhandled Exception Trying to Save Your ROM to Disk" Error

: Free up at least 1–2 GB of space. Delete temporary files, empty the recycle bin, or move large files to another drive. Seed or Config Errors : If you continue

If you use Windows Defender, it is likely blocking the write operation.

If the problem persists, the issue may be specific to the software you are using. Try using an alternative emulator core or a different ROM editor. For example, if melonDS is failing to save a Pokémon HeartGold save file, test the same ROM in RetroArch using the same melonDS core to see if the save file is generated correctly. Delete temporary files, empty the recycle bin, or