I can't create a save game

Hello, since I installed the patch to play Srb2 2.2.6 using version 2.2.1, I had a problem, when trying to create a new single player game, it was impossible for me to do so, a message appears that says:
"This cannot be done in a modified game (press a key)"

This message usually appears when you load addons into the game. The game automatically doesn’t allow you to save if there’s a addon loaded because otherwise, the game would either crash or corrupt your save as the addon isn’t loaded onto the game upon start. (sense you have to go inside the menu to load an addon) If you aren’t using any addon’s/mods and such, the patch files should replace the files that are already in the main root folder, not a separate folder inside the SRB2 directory that you load in game.

Thanks, I realized that I have addons, I downloaded the addons when I entered an online server.