Update.exe isn't working correctly

Hello!

Firstly, this is my first time posting so apologies if this isn't in the right area!

Now, whenever I first run my launcher, it detects there's an update and begins to download it. Once it reaches 100% however,

it throws an error (attached). I'm not sure if I'm doing something wrong (Very possible, haha!) or if its something on the software's end.

Either way, any help on getting to the bottom of this would be greatly appreciated!

Thanks.