Hey alright so just a little update
I updated to Windows 10 and now SAI doesn't work, so I am just busy trying to find another art program that might live up to how comfortable I was with SAI. I'm super excited to finish and show my other characters though! :>
Link
GreenReaper
Have you tried using the technical preview version? Might work better than the original, especially if using the 64-bit one on a 64-bit OS with lots of RAM.