Rune Factory 3 Special -0100e000191b4800--v1310...

You installed v1.3.1, then downgraded to v1.0.0, but your save has v1310 markers. Reinstall v1.3.1, or use a save editor to manually reduce the version flag (not recommended – risky).

Inside, the system.sav and slot_0.sav files contain version markers. If your game updated to v1.3.1, the save header will show v1310 . Editing these requires tools like (PC) or hex editing to avoid breaking compatibility. Rune Factory 3 Special -0100E000191B4800--v1310...

The 0100E000191B4800 looks like a for the Nintendo Switch version of Rune Factory 3 Special , and v1310 suggests a version number (likely 1.3.1.0 or similar build metadata). You installed v1