[Unity 2017.1.1f1] [Windows x86_64] Building error & corrupted 2D sprites

Hello everybody,

I'm working on a 2D project on Unity 2017.1 and I have stumbled upon some problems when building my project for Windows (x86_64 & x86) : several sprites (like, almost every sprites) are corrupted when launching the game via the executable, while they appear as perfectly normal during editor play. On build, they appear either as grey images with small colour artefacts (as in printing test page) either as graphic noise. Animated sprites are fine but blinks.

Here is the error :

I've already done some research about this problem and no solution worked :

• My build folder weights 5.44 Gb and my Resources one 3.44 Mb
• Each sprite is set to Texture Type -> Sprite (2D and UI)
• Mip maps are disabled

I'm working with 2 plugins : Universal Fighting Engine and ProCamera2D; and my GPU is Geforce GTX 1060 with DirectX 12.

Thanks,
Jason C.

 

I have some Wwise errors (that's normal at this stage of development) and an unused shader error. I tried to remove them both in order to see if they hid something else, but no, the error disappeared, the problem remains.
The artefacts are different this time but images are still unrecognisable .
I removed the compression of some images, tried to build on another computer (but with same architecture), no difference.

Here is the main menu:

 

I have done it today. That's the case 1001967.
In the meantime, I have upgraded my engine to the last version (2017.3.0p3) to see if there was any changes, but no, the problem remains the same

 

I tried to convert my png to a jpg and the problem disappeared.
I still don't know where does this problem comes from.