In MSCRM 2013 on click of look up search picker we are getting error

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CRM

Hi We are seeing issues with MS Dynamics CRM 2013 and the most recent version of Chrome Version 51.0.2704.103 m (64-bit). There seem to be issues with the look-up fields which are used to search for records and display in a drop-down list. on click of the search picker we are getting error. this is happening only in chrome, our application is working fine in IE.

please find below for the error log. sorry i am not able to attach the screen shot here.

help will be appreciated!!!!

Unhandled Exception:
System.NullReferenceException: Microsoft Dynamics CRM has experienced an error. Reference number for administrators or support:

What I have tried:

i have tried the below links :

http://www.crmanswers.net/2014/09/the-browser-compatibility-cake-is-lie.html

it is saying that it is because of chrome patch but i am using latest one. still getting error.