Fatal Error when renewing membership after Upgrading to 4.6.16
@Tapash - I just tried to reproduce this on one of our live 4.6.16 projects and I can not. 

From a Contact's Membership I'm successfully able to both:


more -> Renew [no errors; renewed properly] &amp;
more -> Renew-Credit Card [no errors; made payment; got receipt; renewed properly]


I've also checked the JIRA issues and I don't see anyone else describing what you're observing. Considering your other Q as well - I'm wondering if perhaps something went wrong during your recent upgrade? 

General recipe for this is to restore both code base (files) &amp; databases back to 4.6.14 and then to run the upgrade script [to 4.6.16] again. If you can: run it via drush - it may give you some warnings/errors that give you some insight as to what's going on. 


  sudo -u apache drush civicrm-upgrade-db