Need help starting up game

So I just downloaded the 1.1.7 version of Insurgence and I was about to start playing it when… this happened.

So it said the mew cry and then it said a message saying “Script ‘BitmapCache’ Line 393: Runtime Error Occurred. Failed to load the bitmap located at: Graphics/Characters/Clothes/backpack725”

So I have no idea what this is supposed to mean or how I am supposed to fix it to make the game work. Has anyone else had this problem with their game, or how do you do fix this problem?

As it says in the error, the backpack725 sprite is missing, so you must had an incomplete download or unzipping for the game.
Try to either re-download, re-unzip the folder, or add the sprite on the folder on your own.