Invalid Ram Allocation Detected, all the other post for this have not worked for me

So I have used mcreator for a long time now, and only made an account today because I cant get it to work.

I recently got a new computer, and only now downloaded mcreator onto it, I then created a new project, and it says Invalid Ram Allocation Detected.

I then read about ten form pages, and none of them or there methods worked for me. I also read your main page with the common bugs, and could not find anything that helped. All of my preferences are set to default, so I have no clue whats going on.

If someone could help, that would be great!