EndNote is not responding. Error = -1712

I use EndNote X9 in my macbook pro.

The Error = -1712 frequently occurs when I try to update the bibliography.

The occurrence of the error itself is not problem for me, but it takes 2-5 minutes until the error is displayed. During the time, the system is stuck and I cannot do anything.

It is really irritating for me that it takes so long time. 

Could you let me know if there is a way to shorten the “timeout” time in the setting?

Thank you in advance