Fixed. This is what I did.
In Windows, press the “Start” button and locate the “Search programs and files” bar at the bottom of the Start Menu.
Type in temp exactly as shown (with the percent signs).
Press “Enter” and a new window should appear with the location of “C:\Users\YOURUSERNAME\AppData\Local\Temp”
Locate the folder labeled "gw2cache-{RANDOM NUMBERS} and delete it.
