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

This is the most common fix. If your emulator is installed in C:\Program Files , Windows often restricts applications from writing files there.

Follow these steps in order. The solution is usually one of the first three.

If you are using the Universal Pokémon Randomizer ZX, certain versions of games (specifically European or German) can cause this exact unhandled exception. This is the most common fix

If your "Documents" folder (where saves are often kept) is synced to OneDrive:

: Some versions of the randomizer struggle with newer Java environments. Solution : If you are using Java 17 or higher, try installing Java 8 instead, as many randomizers were built specifically for that environment. The solution is usually one of the first three

Modern antivirus programs (and Windows Defender) are often aggressive toward emulators. They may flag the "save" action as a suspicious process trying to modify files on your hard drive.

If the ROM file itself is marked as "Read-Only," software cannot overwrite it or save changes alongside it. your base ROM file and select Properties . Look at the Attributes section at the bottom. Uncheck the Read-only box if it is filled. Click Apply and then OK . Repeat this process for the folder containing your files. 4. Simplify File Paths and Names Solution : If you are using Java 17

The walls of the convenience store began to pixelate. The rack of potato chips behind him shivered, turning into a stack of low-polygon cubes that flickered between yellow and a void-like black. The hum of the refrigerator transitioned into the same piercing dirge from the game.

Certain emulators (especially development builds) may have bugs in their save handling code. A corrupted config file can also point the emulator to an invalid save directory.