A have Any Question ! On my Shape Dynamics Under Size Jitler "Control" got Danger Sign ! What Should i Do ?
the danger icon (great name, by the way) appears when your system does not have a means of supplying the control source that is selected in the drop down. I would guess for some reason your tablet is not active, perhaps unplugged when you started Photoshop or when you last rebooted. If this used to work for you, try either of those actions after being sure your tablet is behaving as expected, including providing pressure info. If it has never worked, then most likely your system does not support pen pressure as currently configured.