The is more than just a DRM mechanism; it is a token of respect between the artist and the developer. For less than the cost of a dinner out, you get a professional-grade illustration tool with a legendary brush engine that runs on virtually any Windows PC.
A: Reinstalling Windows often changes your hardware ID because the OS serial and partition table change. If you still have your old license.slc file, it likely won't work. You will need to email the developer with your old receipt and new System ID for a free re-issuance (assuming you are the same user on the same physical motherboard). paint tool sai 2 license certificate