Bug: Camera might start moving by itself for no apparent reason
Solution: Press the letter g (gravity) on your keyboard, when you reach the ground or a solid object, use arrow keys to move forward, this shoul stop the unintentional movement.
Bug: RENDERLights crash when calculating Global Illumination
Solution: Sometimes the program may crash when switching from constant ambient to precalculated lighthing, it could also happen when baking lightmaps. There is windows memory handling issues related to this problem, we are doing the best we can to work this around and minimize the effects, best practice is to save project often prior to switching from any mode to precalculated GI.