I tried to add a C++ script to a cylinder and every time I launch the project it pops up with the following [image] , I have no clue how to fix it and if anyone could help I would lppriciate it!

In your project folder you should have a .sln file, if you don’t have it (but you really should if it’s C++) right click the .uproject file and create it: [image] Open it, and then be sure to select “Development editor” in the top bar: [image] In the Solution explorer, right click your project a…