Crash on new project bootup (or any other then 1)

Hey guys!

So ive been using UT engine for the passed 3 days and messing about testing out stuff knowing i could just recover all my settings on the fly, im quite far into my project. but wanted to follow a tutorial on how lighting exactly works.

I try to open a new project it crashes.

The launcher crashes at about 39% and
i picked this out of the log:
LogMaterial: Missing
cached shader map
for material WorldGridMaterial,
compiling. Is special engine material.

So ive done some thinking, and all i could think off is that i corrupted the main material inside the main UT folder.
I remember double clicking on a texture to test things out, remove ALL of the basic texture nodes to start a new texture on. little did i know i was adjusting the world grid material (if i am even thinking of the correct material)

So why i think this is the thing killing my engine, is because in my MAIN project which i am working on works! it just boots up without a problem.
The spoof on the other hand, my world grid material is a shiny wood there. the one i messed around with.

Also on a sidenote, in the log it also shows it trying to load up all my assets im using in my main project. I dont see a reason why it would try to do that.

EG:

[2018.09.14-10.22.11:166][
0]LogLinker:Warning: Can’t find file
for asset
‘/Game/CustomMaps/UGC1510418886/Building_pieces/Textures/Wood_plancks_003_NRM’ while loading
…/…/…/Engine/Content/EngineMaterials/WorldGridMaterial.uasset.

This makes me think im on the right track.

So i’m not sure how to get myself out of this situation. since i think every time i will load a new project. it will crash. if i fix the issue so i can make a new project, my main project might get corrupted?

Please help me out, i’ve been addicted to the engine for a few days now haha, hate to see it go.

For the sake of me having no patience… and for science! I reinstalled the launcher and it booted up. (prob because it reinstalled the texture again)

I loaded up my own project in which i corrupted the texture files to begin with. and the world mesh texture was back to normal, which is odd. but of course fine with me!

After i reloaded the worldmeshtexture into my level multiple times to make sure its in there real good (yes im a newb) i started a new project AGAIN, and it booted up just fine.

So long story short.
If people get this error, they erased or altered the world mesh texture in such a bad way. it couldn’t be referenced anymore by the launcher.