Red slash shown across extruder heating, cannot control temp, but still heats up
So my recent issue is that when I connect my Prusa i3 RepRap 3D printer to my laptop and use the repetier-host, I dont seem to have control of the extruder temperature. A red slash is shown on the icon (like how it looks when you disable to fan, bed temp, or extuder temp). The extruder does still heat up, and the temperature is shown in the color bar to extruder temp, but I can not adjst the set point of the temperature. The same printer works fine on the repetier-server with no temperature issues, but I prefer the host so I can slice my .stl files and print directly.
Any idea how I can fix this bug?? Thanks in advance!!