and by half the program, I literally mean half the program, split right down the middle of the screen, I can't drawn or click on the scroll bars on the right side, If I start drawingo n the left side of the screen, i can draw on the right until I lift my pen up again. It just isn't registering half of the canvas for some reason. This has happened before and fixed itself by opening up a new file or rebooting my comp, but it's NOT fixing itself anymore, and I have 3 commissions for people I have to get done!!

Screenshots
https://www.dropbox.com/s/nm1cac1h7j9z7 ... M.png?dl=0
https://www.dropbox.com/s/ztoyu6yeccocm ... M.png?dl=0
https://www.dropbox.com/s/xn8vdywd0ttti ... M.png?dl=0