ARK Dev Kit crash after hitting the "Play" button

Hello modders,

I’m new to it and I’m already having trouble… I can’t test the modded tools because everytime I hit the “play” button to test them inside the dev kit, the dev kit freeze for for some minutes and I get this:

It’s not possible that I’m the only one to get this problem, since google is really useless at times like this. I wasted my whole free day trying to solve this to no avail… Anyone here can give me some light?

change language to english, and play.