Update error

[KyoKnightly]

I downloaded the game from the page and installed, opened it and it says 'scanning for updates'. It sits there for a moment and then a box pops up and says as follows

Quote

 

[Update error] An error has occurred.

Please restart the launcher. If this problem persists, please contact Customer Support.

 

E02010

RGIU_G4/17231940

 

 

I have restarted it a few times and even tried reinstalling it. Does anyone know how to fix this issue?