White dots instead of blue stretch after installing Cortex

Hi, When I hold my mouse left button down and moving my mouse around on my desktop, it's normally blue... But after I installed Razer Cortex, it began to look like white dots in the edge and nothing in the middle. I tried it before after I installed Cortex, but I reset my computer... Does someone know how to fix it? This is how it looks like now: ~ Marcuz