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

Aggressive antivirus software often mistakes emulator save states for ransomware behavior because the emulator writes large chunks of binary data quickly.

: Using a ROM that has been pre-modified (a "ROM hack"), trimmed, or is from an unsupported region often triggers this exception.

The directory path contains invalid characters or is too long. If you try to save the randomized ROM

If you try to save the randomized ROM directly into a protected folder (like Program Files ), the computer will block the save action.

: If you have used a tool to reduce the file size of your ROM (trimming), the randomizer may fail to save. Use a completely unmodified, clean ROM instead. The tool is trying to save to a

The tool is trying to save to a directory that does not exist or contains special characters that break the software.

Run the software from this new location. This bypasses most Windows User Account Control (UAC) permission blocks. 3. Extract Compressed ROMs triggering an unhandled exception.

: Ensure your storage drive has at least a few gigabytes of free space. If you are using an external USB drive or SD card, right-click the drive in This PC , select Properties , and ensure the File system is formatted to NTFS or exFAT rather than FAT32. Summary Checklist Why It Helps Run as Admin Bypasses standard Windows user account restrictions. Relocate Folders Avoids protected directories like Program Files . Check Antivirus Stops security software from blocking file modifications. Uncheck Read-Only Allows the emulator to overwrite files on the disk. Free Up Space

Modern anti-virus software, particularly the "Controlled Folder Access" feature in Windows Defender, treats emulators as unknown applications. It may block the emulator from saving data, triggering an unhandled exception.

I can provide specific folder paths and config tweaks for your exact setup. Share public link