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

ShowUserFriendlyMessage($"Cannot save ROM: ex.Message"); LogError(ex);

and your base ROM in a simple folder on your desktop or a dedicated "Games" folder to avoid permission issues. Check for Updates : Ensure you are using the latest "ZX" fork of the Universal Pokemon Randomizer , as the original version is no longer maintained. Verify the Base ROM ShowUserFriendlyMessage($"Cannot save ROM: ex

If this error only happens with one specific game, the ROM file itself may be corrupted or "locked" by another process. Try loading a different game to see if the error repeats. ShowUserFriendlyMessage($"Cannot save ROM: ex.Message")

for temporary files during the process; if the disk is full, the write operation fails. ROM Corruption or Incompatibility : Attempting to randomize a if the disk is full