Sending did not succeed 2dl4d

Version: 1.5.0.2 (20060308)with enigmail + GPG
Recently i received a pop up saying that a newer version 1.5.0.4 was ready to install. So i backup me profile and allowed the update to continue. upon updating it said that it was missing some file and could not complete. since then i am not able to receive or send any emails from my gmail and i receive this message... Sending did not succeed. Mail at pop.gmail.com responded: name and not accepted.
i have not changed any of these settings and i am able to with my name and . (i have tried to my owrd in ptb settings but cannot locate?) thanks for your help...
tekimj