System Information
Operating system and graphics card
windows 10 pro 64 bits - Nvidia Gforce GTX 760
Blender Version
Broken: Blender 2.77a abf6f08
Short description of error
blender crashes at modifying a mask in the image editor when no image has been loaded or added
Exact steps for others to reproduce the error
launch Blender, switch the 3d viewport area to image editor area, switch mode to mask, add circle or square, hit "G", Blender crashes. it also crashes when trying to select a spline.