If you are getting error like this when loading an old save from Ver1.3, this article might help you!

Make sure you have a backup of your save files in case you did something wrong!!!!

Your save is under your game "save" folder, i.e. file4.rmmzsave

First go to this website: https://www.save-editor.com/tools/rpg_tkool_mz_save.html

Upload your save file and click File decoder (SAVE file => JSON file), Click Run (it could take awhile ~5 minutes)

Then download the txt file.

Open the txt file and scroll to the bottommost. You will see it ends with two } } like this below

Replace the two } } with the code below:

},

"ultraHUD":{

"globalVisibility":true,

"globalActiveness":true,

"_mapIndex":0,

"_battleIndex":9,

"_wasHUDButtonClicked":false,

"@":"Game_UltraHUD"

}

}

Now save the file, then go back to the website.

Upload the txt file you just edited, select file encoder (JSON file => SAVE file), click Run then download the rpg save

Put the save back to the game save folder, then the problem should be fixed.