Crash at Startup

Yestarday I updated the new iWork Version for Mavericks.

As I installed Pages, Keynote and Numbers v.5 I had a terrible problem.

Any of these apps Crash as I load them.

Please anyone been having the same problem?

Apple Support I really need your HELP because I can´t work and I would like to know what is the best solution for this problem.

Thanks

Nuno