Well, i was able to install the update for 3.5.5 or what the latest version is. Well, i install it, and i go to restart it (Paint.Net), and it tells me the same error as i had before with 3.36. I'm 100% sure i just need the DLL file again. I did that before and that worked. So as long as someone would be able to give me that again, i would appriciate it.
Other than that, i won't have any other problems!