hello hello 1- There is a ground safety stress error in the rd16 raft flooring during the construction, what is the reason for this? 2 - Why does the program give an error when I press the 3D frame button? (I had to delete 2 layers because the project is larger than 3mb. You need to add two layers to the project and have it analyzed) thanks NOTE= Projects larger than 3mb do not fit in the form. don't you think that's a problem?