[ADMB Users] Problem installing package amdb on mac 10.9.3

[DANIEL.PAREDES.LLANES.599896]

Dear members of ADMB project,

I am trying to install the package on a Mac following your  
instructions but when I try to open the file "ADMB 11 monitor" the  
computer returns me the following message

“ADMB-11 Terminal” is damaged and can’t be opened. You should move it  
to the Trash.

I have tried to download all possible versions and I have the same problem.
I do not how to do. Any suggestion?

Thank you very much.
Sincerely,
Daniel Paredes, Ph.D.