spacebar freezes unity in editor

so something really odd just started happening to my project in unity… whenever i run it, and hit the spacebar while it’s running… unity pauses (the play and pause button seem to be greyed) but i cannot un-pause it, it does it every time i start it now, just runs the scene and “pauses” after i press the spacebar, and will not let me play it again until i close the program…

it prevents the player from playing the scene. but i can do everything else in unity still… what the hell did i do to unity??? grrrrr

I know this is an old post, but I ran into the same problem, and if anyone else does - a quick glance at the console window told me that the prefab variable I had in my script wasn’t assigned an object. It was basically hitting an error. I drug my prefab to the variable in the inspector, and all was well.