eigen value buckling analysis

[mon1299]

HI everyone,
I am trying to do eigen value buckling analysis. I got an error message when doing this.I did the static analysis with prestress effect on.When doing the Eigen value analysis the error message is "There are no degrees of freedom active". I am wondering why I am getting this message and what is the significance. I followed the same procedure and solved same type of beam without any error. Is there any one who can help me in this regard?
Thanks
MOn

 

[ansysfreak]

Hi

Could you upload the input file to this site?

Regards
Garry

 

[mon1299]

Garry,
Thanks for your reply. I solved the problem. I modelled the whole thing in another file and this time it works.
Thanks again
Regards
Mon