model crashed when i was trying to refine elements locally (triangle mesh)

hi,
i used feflow 6.0 (standard) to open a model that was originally built using feflow 6.0 (classic).  the model crashed when i tried to refine elements (triangle mesh) locally.  however, if i use feflow 6.0 (classic) to refine elements, the model would not crash. 

i have done mesh refinements for several other models that were originally built using feflow (classic) as well without getting any problems.  i do not know why it happened to this model.  does anybody can give me some help to let me know what might casue this knid of problem?

thanks! 

Did you use the 'out-of-the-box' FEFLOW 6.0, or do you have the latest patch version installed? I remember that there was an issue with refinement that was resolved already.

Thanks Peter!  Feflow 6.0 (standard) with latest patch has been downloaded and installed.  The problem was resolved!

Regards,

b