Hello can somebody please help me with this issue. I have an imported body model of a car bodywork but i need to convert it to solid body model to i can begin to edit it and add features etc. I have used import diagnostics and there are no issues so i then tried to proceed with feature recognition but it just stalls and freezes. I have tried everything and have been at this for over 2 weeks with no success. This is for a university project and any help would be greatly appreciated. I have attached the file.

Thankyou, Emmet