Issue Displaying 2d Scatter Plot

[HalKosik]

Hey there, I am having issues with the 2d scatter plot displaying any data. As some other people have shown here I am getting the plot screen to show up, but it is frozen and not displaying anything. When I hover my cursor over the window I get the loading icon.

I have my board flashed with SDK 2.1 and I am using a downloaded configuration file from the demo visualizer. When I run the program you wrote I am not getting any errors and that blank screen is coming right up. I did have to edit the code a little to get the plot window to open. I changed line from "app = QtGui.QApplication([])" to "app = QtWidgets.QApplication([])". I am using Windows 10 and all three LEDs on the board are lit up. Any suggestions? Ive been fighting with this for a couple weeks now. The demo visualizer works perfectly.