Gmail 4.6 Does not allow "From"/Sender address to be changed to a different email address I did see this question, but it was from two years ago, so I know it does not apply to my question.

Before the 10/1/2013 update, I was able to easily switch my sender email account to a different email address, but now, I can't.  I have checked the settings in the app and for the email account.  

Is there a setting somewhere in 4.6 that I am missing or did Google kill this feature for the mobile version?

If my question isn't clear, I apologize, and please let me know how I can improve it.

I'm using: Nexus 4, Android 4.3

After further investigation, it may be broken: gmail forum post

Thanks.
SOLUTION: Clear the app cache.  After I cleared the app cache, the "send as" was functioning as it did before the update.

Does this fall under as a duplicate of: App X Isn't working correctly.  How can I fix it?