problem with solidifying a surface

[Dome_dv]

hii I have a problem during the solidification of a surface that penetrates inside a solid body. I attach the photo of the problem. I tried to fill the surface but having projected the curve onto the cylinder I can't select the surface to fill properly, could that be the problem?

[tbraxton]

In order to solidify a quilt in Creo it needs to be closed (think watertight). Without looking at your model it is hard to define the issue(s).

[Dome_dv]

I tried to modify it recently and I managed to close the surface I was missing but it still gives an error. thi is the model 

[StephenW]

Just FYI, the model was created with the educational version of creo and can not be opened with the commercial version.

[tbraxton]

You need to specify what version of Creo and type of license (commercial/Educational) you are using when posting here. Your model was created with an educational license which cannot be opened by a commercial license. I am not able to open the file.

I would bet that the quilt is not closed as this is the most common cause of the error you are getting.