Run your Planetside 2 Launchpad and log in, but do not press play. Click on the Advanced Tools icon (looks like a hexagon surrounding a wrench) in the lower left and then choose the option to open game directory. In the window/folder that comes up, locate and delete the following files
Once these files are deleted, close the Planetside 2 window/folder and go back to the Launchpad > Advanced Tools/Settings menu. Click on the Validate Game Assets menu option and then press the green Validate button to have the Launchpad check your game files, and download any missing or corrupt files.