When importing a new blade, you can choose to import a Blade structure file ,to define the structural properties of the cross sections (see Blade database ). All the offsets (i.e. the offset of the Elastic center , the Mass center and the Shear center ) of the root element have to be 0.

If any of the offsets are not set to 0, you will get the following error message:

The error message tells you what are the offsets that were found to be non-zero. Simply set all the offsets to 0 to solve this issue.