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

Open the Windows Start menu and type , then press Enter. Click on Virus & threat protection .

The compiler looked for specific game hex data that was missing.

Windows has a built-in feature designed to stop ransomware from changing your personal files, but it frequently stops legitimate gaming utilities too.

Delete old files or switch the output target to an empty secondary drive. java.io.FileNotFoundException (Access is denied) Open the Windows Start menu and type , then press Enter

: Transfer your tools and ROM files into this new folder and reconfigure the tool's output settings to point here. 3. Allow the Tool Through Windows Defender / Antivirus

Sometimes, the ROM file itself or the folder it resides in is marked as "Read-Only," meaning the operating system explicitly forbids any program from modifying it. Go to the folder containing your ROM file.

The folder is "Read-Only" or located in a protected system directory. Windows has a built-in feature designed to stop

If you have the ROM or its save file open in a , a text editor , or even Windows Notepad , the emulator cannot write to it.

If the tool expects a raw binary file but receives a compressed archive, the save function will crash.

If you are using randomizers like the , this error often occurs due to specific software bugs. Workaround: Try generating a pre-configured "rndp" file rather than filling out the settings manually. Users have reported that while manual saves crash, loading a pre-set config string often bypasses the bug. Load the uncompressed ROM file (e.g.

Load the uncompressed ROM file (e.g., .gba , .sfc , .nds ) into your software. 4. Check File Read-Only Attributes

Some emulators require elevated privileges to write to system-protected directories (like C:\Program Files or C:\Users\[You]\AppData ).