Hello guys. I am trying to make a wind turbine blade. I have made all the airfoil sections but when I try to use loft command and insert the guide curve it always shows me the above mentioned error. I did exactly what one guy did in a youtube video. He didnt get the error whereas I keep getting the same error all the time. I am stuck at this point and cant really proceed further with my project untill I have a solutuion for this. Please help me guys. Any sort of help will be really appreciated. I am attaching my solid works file. Please have a look and let me know what needs to be done. Thankyou.