"Unhandled exception" pop-up when setting up Xbox 360 Hiding

[onslaughtiscool]

When trying to set up my guitar for Fortnite (I believe it's a Rock Band 2 Starocaster?), Clicking the "Tell HidHide to hide Xbox 360 controllers from Fortnite" check box ends up giving me this error. I'm not sure if more information is needed, but I can provide it if need be, The guitar works fine on other games as well.