Crashed when select multiple items

[Anonymous]

My revit will crashes whenever I tried to select multiple items, no matter if I just drag two of then or even when I select "select all instance -> Visible in view", or any of the multiple selecting tool. It will crash immediately and the Error report will pop out.

I wonder if anyone had this problem before?

Is there a way to solve it?

[barthbradley]

This is a shot in the dark, but I'm thinking it's constraint-related. Reveal Constraints to investigate. Also, Reveal Hidden Elements to see if you've got Mass Elements that geometry might be dependent on that you are not including in your selection set. 

[ennujozlagam]

With this happening in one file or other files also? have you try to audit your revit files? Have you try to install the latest updates from Autodesk and see if helps. Thanks