If you download a "pre-packaged portable version" from a random forum or file-sharing site, you are likely using a cracked, pirated copy . Portable versions strip away the license verification process. Using these is software piracy.
This is the biggest selling point. Your brush textures, stabilizer settings, swatches, and even your custom UI layout are saved inside the portable folder. Move the folder to a new PC, and it feels exactly like your SAI. paint tool sai 2 portable
Unleashing Your Creativity Anywhere: A Deep Dive into Paint Tool SAI 2 Portable If you download a "pre-packaged portable version" from