Working with chrom

I am working with C# nuget,
Chrome version; 36.0.1985.131
android 4.4.2 nexus 4

after upgrade the chrome to the latest version (automatic update) the appium dosent recognize any object on the chrome
I using those capability
capabilities.SetCapability(“appPackage”, “”);
capabilities.SetCapability(“appActivity”, “”);
if I use the flowing capability
capabilities.SetCapability(“browserName”, “Chrome”);
i Cant any chrome browser