Generating Mesh Wrap Error

I am having some trouble after optimizing as I could not export mesh because the ShapeWorks could not generate mesh wrap. What would be the problem and how can I fix those error?

If anyone had those same problem and fixed it, please let me know!

Thank you in advance.

Did the progress bar ever finish, or did you get an error?

Sorry for late reply.

I guess it was due to the number of particle as it has to do more calculation when more particles are employed.
As I have seen nearly 97% of my CPU working. (This would have been a main cause I guess).

Thank you.